Spotlight: Calculated Industries Gradematic 100

Spotlight: Calculated Industries Gradematic 100

Quick Facts

Model: Gradematic 100

Company: Calculated Industries

Timeline: 1983

Type: Grades conversion, Four Function

Power: 2 LR44/AR76 batteries

Number of Functions: 576 (see source)

Calculated Industries has three sequels to the Gradematic 100: Gradematic 200, Gradematic 3000, and Gradematic 4000.

Get that Grade!

The Gradematic 100 has four main modes:

* Four Function Calculator

* Timer

* Numerical Grades

* Letter Grades

Four Function Calculator (Calculate Mode)

The four function calculator is the basic calculator with the four arithmetic functions (+, -, ×, and ÷), the percent function (%), and one memory register. The [ MRC ] key acts as both a memory recall and clear. However, there is no square root or change sign key.

From any other mode, we can enter the Calculate mode by pressing the equals key [ = ].

Timer Mode

The timer has the ability to count down from a set time or count up (stopwatch).

Count Down: [ TIMER ], enter minute and seconds, then press [ TIMER ] again. The Gradematic 100 does not beep when the timer runs out.

Count Up: With the display at 0 minutes and 0 seconds, press [ TIMER ] starts the stopwatch. Press [ TIMER ] again to stop the time. The stopwatch can only be stopped once.

Numerical Grades Mode

In the Numerical Grades mode, we can enter numerical grades for students depending on the total number of assignments and tests. The general process is this:

1. Press the [ NUMERICAL GRADES ] key.

2. Enter the maximum total score, which would get the student an A+ grade, then press [ STORE*HI ].

3. Enter the minimum total score of which a student to earn a D- grade, then press [ STORE*LO ].

4. To see the break down, press the [ BREAK POINT ] key repeatedly. When ready, press the [ CONTINUE ] key.

5. For each student, enter each grade, then press the plus button [ + ]. When finished, press the [ STUDENT AVERAGE ] key get the average and the grade.

6. (Optional) Repeat step 5 to enter additional students. Press the [ MRC ] key to get the Class Average.

Example: In a class of six assignments worth 100 points each (for a total of 600 points), find a students’ average on the grades: 88, 78, 85, 92, 93, 90. The minimum grade for a D- is 60% of the maximum (360 points).

[ NUMERICAL GRADES ]

Display: E Hi Sc. 600 [ STORE*HI ]

Display: E Lo Sc. 360 [ STORE*LO]

Display: b.P. Press [ BREAK POINT ]:

360 d-

380 d

400 d+

420 C-

440 C

460 C+

480 b-

500 b

520 b+

540 A-

560 A

580 A+ (press [ BREAK POINT ] to repeat the cycle)

[ CONTINUE ] Display: Su Sd Gr

88 [ + ] 78 [ + ] 85 [ + ] 92 [ + ] 93 [ + ] 90 [ + ] Display: 6 526 (total points: 526)

[ STUDENT AVERAGE ] 6 3.26 b+

Note: For some reason, the grade below D is labeled E.

Letter Grades Mode

The Letter Grades mode operates in a similar way to the Numerical Grades Mode. The Letter Grades Mode has specialty keys [ A+ ] through [ E ]. The student average and class averages works the same way.

Example: Find a students average consisting of the grades A-, B, C+, B+, A-, A.

[ LETTER GRADES ]

Display: Ent Gr. [ A- ] [ B ] [ C+ ] [ B+ ] [ A- ] [ A ] [ STUDENT AVERAGE ]

Display: 6 3.33 b+ (average 3.33 B+)

Two Scales

The GradeMatic 100 has two GPA scales: one where A is worth 4 GPA points, and A is worth 12 GPA points. This scales can be toggled with [ A=12 ] key, which can be pressed at any time.

Final Thoughts

If you get a Gradematic 100, make sure that a manual is included. I purchased one from a local thrift mart for a $1.00 but there was no instructions. That led me to purchase another Gradematic 100 on eBay.

Another fine specialized calculator that was once made by Calculated Industries.

Eddie

All original content copyright, © 2011-2025. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.

Retro Review: Panasonic CompuVoice JF-721U

Retro Review:  Panasonic CompuVoice JF-721U

My partner, Chris, gave me this calculator as a Christmas present.  Thank you and love you, Chris!

Quick Facts

Model:  JF-721U

Company:  Panasonic

Timeline:  early to mid 1980s

Type:   Four Function Calculator, Stopwatch, Timer, Clock, with Voice

Number of Digits:  8

Power:  3 AA batteries

An All-In One Calculator

This is like a dream machine:  a calculator, a clock, stopwatch, timer, and it talks, and it came with a beautiful brown leather power that shows the clock and a button labeled [ TIME ], when pressed the calculator reads the time.   [ TIME ] is located on the upper left hand corner of the calculator next to its speaker.  

Chris definitely did well!

The voice is a male machine voice, loud and clear. 

The Three Modes:  LOCK, COMP-TIME-STOP WATCH, and SET

The switch on the JF-721U selects the calculator's three modes:  LOCK, COMP-TIME-STOP WATCH, and SET.   Let's go through these modes one by one.   

LOCK Mode

LOCK mode is basically the calculator's sleep mode.  The display shows the clock and the only key that operates is the [ TIME ] button.  

COMP-TIME-STOP WATCH Mode

On this mode, we can run the calculator, timer, and the stopwatch.   

Timer:  The timer can be set in hours (h) and minutes (m) only.  To set the timer, press the [ SET ] button, enter the time desired in hh-mm format, and press [ S/S ].   The [ S/S ] acts as the start/stop button.

Stopwatch:  The stopwatch is actived by pressing the [ SET ] and [ S/S ] keys in sequence to start the stopwatch.  The stop the stopwatch again, press the [ S/S ] key and record the time.   If the voice is turned on, the final time will be read.   We can start and stop the stopwach as many times as we want.  

To cancel the stopwatch without seeing the result, press the clear [ C ] button.

Calculator:  The JE-721U is a four-function calculator.   The calculator is activated by the clear [ C ] button.   There are three standard memory keys:  memory plus [ M+ ],  memory minus [ M- ], and memory recall-clear [ MRC ].  The number in the memory register is retained as long as there is battery power.

One curious thing with the percent key, [ % ], is that the key only works with multiplication and division problems.  

To add a percent: 

Enter the number, press [ × ], enter the percent, press [ % ], press [ + ]

To subtract a percent: 

Enter the number, press [ × ], enter the percent, press [ % ], press [ - ]

The calculator's change sign key is labeled [ (-) ]. 

In this mode, the calculator's voice is toggled on and off by the [ VOICE ] key.

The hour [ HOUR ] key is also available.  If the hour key is on, then the calculator will announce the hour.

SET Mode

We can set the clock and the alarm in SET mode.   In this mode we can set the clock and an alarm.

To set the clock:  press [ SET ], enter the hour and minute, and then the [ TM ] key.  

To set the alarm:  press [ SET ], enter the hour and minute, and then the [ ALM ] key. 

In this mode, the decimal key, [ . ], switches between AM/PM.   

If this calculator can handle military time (00:00 to 23:59), I don't know how to set it.  Also, the calculator is a clock only, so for daylight savings time, the time must be manually set. 

Final Thoughts

I like this calculator.  The voice is loud and clear and the time functions are really nice additions.   I imagined the CompuVoice calculators set on the desks of professionals and were companions of travelers back in the 1980s.     

Eddie

All original content copyright, © 2011-2024.  Edward Shore.   Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited.  This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author. 

Retro Review: Texas Instruments TI-65

Retro Review:   Texas Instruments TI-65

Quick Facts:

Model:  TI-65 Technical Analyst 

Company:  Texas Instruments

Years:  1986-1989

Type:  Scientific, Programming

Batteries: 2 x LR44

Operating Mode:  AOS

Memory Registers:  up to 16 (0-F)

Programming Steps:  up to 100

Comes in case

Stopwatch and Timer Included

Features

The TI-65 is a late entry of the Texas Instruments and has the following features:

*  Trigonometry, Logarithms, Powers

*  Absolute value, integral and fraction part

*   DMS and HMS conversions  (degrees and hours, respectively, 360° for degrees, 24 hours)

*  Eight scientific constants

*  Eight conversions  (→ (US to SI),  INV for ← (SI to US), except Joules/calories which the order is reversed)

*  Base conversions to hexadecimal and octal only (unfortunately not binary nor any Boolean algebra)

*  Statistics

*  Linear Regression

*  Storage Arithmetic 

*  Numeric Integration

*  Programming

Scientific Constants (the values stored in the TI-65):

c:  Speed of light = 299792458 m/s

g:  Earth's gravity = 9.80665 m/s^2

me: Mass of an electron = 9.109534 * 10^-31 kg

e:  Charge of an electron = 1.6021892 * 10^-19 C

h:  Plank's Constant = 6.626176 * 10^-34 J s

k:  Boltzmann's Constant = 1.308662 * 10^-23 J/K

Na:  Avogadro's Constant = 6.022045 * 10^23 molecules/mole

R:  Gas Constant = 8.31441 J/(mole * K)

The SI units are printed with the constants on the TI-65, which I like.  

Conversions:

inches - centimeters

ounces - gallons

gallons - liters

degrees Fahrenheit - degrees Celsius

pounds per inch - Pascals

horsepower - kilowatts

Joules - calories

pounds (* foot) - Newtons

Programming, Integration, and Memory

The TI-65 has 100 programming steps that is shared with the memory register.   A register is worth seven programming steps, and the amount of memory registers available decrease as you type in steps.   Most programming steps are fully merged, hence 2nd, 3rd, and INV (indicated by a negative sign in the key code) with its key count as one step.  However, storage arithmetic takes two steps.

Maximum Number of Memory Registers vs. Maximum Amount of Steps

100 steps:  1 register (R0)

98 steps:  2 registers (R0, R1)

91 steps:  3 registers (R0, R1, R2)

84 steps:  4 registers (R0 to R3)

77 steps:  5 registers (R0 to R4)

In learn mode, the number of steps and the maximum number of registers are on display, along with the programming step.  

Memory registers can be protected by the [ 2nd ] (PUM) # sequence.  

A full set of programming commands are here:

DSZ:  decrement R# and skip if zero

INV DSZ:  decrement R# and skip if not zero

x<m:  test x < R#

INV x<m:  test x ≥ R#

x=m:  test x = R#

INV x=m:  test x ≠ R#

x>m:  test x > R#

INV x>m:  test x ≤ R#

LBL and GTO:  label (0-9, A-F, F1, F2)

F1 and F2:  user keys and labels

PAUSE:  pauses execution

SBR:  subroutine

INV SBR:  return

LIST:  display steps stored in memory

Integration:  Integration requires R0, R1, and R2 to be protected by PUM 2.  In the program, use R1 for x (you are given x in the register to start), end the function with [ = ] [ R/S ].    Calculation:  lower [ STO ] 1, upper [ STO ] 2, [ 2nd ] ( ∫dx) n [ R/S ]

Statistics:  Clear all protection first by PUM 0.   Six registers are used, and a maximum number of programming steps is 63 while statistical data is stored.  From the TI-65 manual, the following registers take the following values:

R1 = n * Σxy - Σx * Σy

R2 = n

R3 = Σy

R4 = n * Σy^2 - (Σy)^2

R5 = Σx

R6 = n * Σx^2 - (Σx)^2

Stopwatch and Timer

The TI-65, billed as a technical calculator aimed at professionals, includes a stopwatch and timer (but not a clock).  

Stopwatch:  

Press [ 3rd ] ( TUp↑) to start the stop watch.  Do this again to stop it.  

Timer:

Enter the time in hh:mm:ss  (hours:minutes:seconds) format, press [ 2nd ] ( TDn↓ ) to start the timer.   Do this again to stop it.   There are no sounds, the timer displays 00:00:00 when completed.  

You can store the timer into any available register. The store key is not required in this instance.   Recall the last time by pressing [ RCL ] [ : ].   

It may be possible to include the stopwatch and timer, however, they will not run in the background.   When the stopwatch or timer is working, the TI-65 is locked out of calculations.  Still, a nice feature.  

Closing Thoughts

I believe that the TI-65 is the penultimate calculator in the Galaxy series (the last is the TI Galaxy 67).  It's one of Texas  Instruments' most underrated calculators and production had continued into the 1990s, it could of had served as a non-graphing alternate to the TI-81.   Back in the early 1990s, graphing calculators were not as accepted in school; today, they are expected.

If you are collecting calculators, I would recommend the TI-65.  It's one of the best keystroke programming calculators Texas Instruments made since the TI 58/59, with a complete set of instructions and a decent amount of memory.  You do need a little patience because the TI-65 can be slow (especially compared to today's calculators).  The case and the sticker with helpful hints attached to it make a nice touch.  

(I don't recall the TI-67 Galaxy ever being on sale in the United States.)

Here are some TI-65 programs I posted in July 2016:

http://edspi31415.blogspot.com/2016/07/ti-65-programs-part-i-digital-root.html

http://edspi31415.blogspot.com/2016/07/ti-65-programs-part-ii-reynolds.html

http://edspi31415.blogspot.com/2016/07/ti-65-programs-part-iii-impedance-and.html

and will have more on tomorrow's post.

Sources:

Texas Instruments.  "TI-65 Technical Analyst" http://www.datamath.net/Leaflets/CL-947A_US.pdf     Flyer provided by datamath.net.  Last accessed April 10, 2022.

Texas Instruments TI-65 Technical Analyst Guidebook  1986

Toth, Viktor.  "TI-65"   rskey.org. 2022  http://www.rskey.org/ti65  Last Accessed April 29, 2022

Tschnenrechner-Sammlung, Tony   "TI-65 Galaxy"  Tony's Taschenrechner-Sammlung Calculator Collection https://www.thimet.de/CalcCollection/Calculators/TI-65/Contents.htm  Last accessed April 29, 2022

Eddie

All original content copyright, © 2011-2022.  Edward Shore.   Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited.  This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author. 

Retro Review: Calculated Industries NautiCalc Plus

 Retro Review:   Calculated Industries NautiCalc Plus

Quick Facts:

Model:  NautiCalc Plus

Company:  Calculated Industries

Years:  1996-1998

Type:  Nautical

Batteries: 1 x CR-2032

Operating Mode:  Chain

Memory Registers: 10

Features

For a company that produces specialized calculators, the NautiCalc Plus is a rare calculator.   I purchased mine from Calculator Source's eBay page.   Calculations that the NautiCalc offers are:

*  conversions of time

*  conversions of distance

*  conversions of speed

*  triangulation calculations:  course direction, 1st bearing, 2nd bearing, distance of the bearing object, distance abeam

*  solver:  speed, distance, time

*  solver:  tank capacity in gallons, fuel efficiency (statute miles per gallon), range (how far can you travel with a fuel tank)

*  paperless tape with the capacity of 10 entries, accessed by the [ Rcl ] [ = ], which is not marked on the calculator.   Scroll the entries by the plus and minus keys.  

Memory Registers

The NautiCalc has ten memory registers, M0 through M9.   What is unusual is that the [ Stor ] key acts a memory-plus for M0.   For example:

[ Conv ] [ + ] (Clr Mem)

25 [ Stor ] 0  (M-0   25)

[ Stor ] 1    (M-1  25)

50 [ Stor ] 0  (M-0  50)

[ Stor ] 1  (M-1 50)

[ Rcl ] 0   (M-0 75)   75 is stored in M0,  50 and 25 were added together

[ Rcl ] 1   (M-1 50)   50 is stored in M1, 50 replaced 25 in M1

Miles

There are two measurements for miles:  statute miles and nautical miles.   Statue miles, also known as survey miles, are miles related to road distance, equal to 5,280 feet.   Nautical miles, which are used in sailing and air travel, are measure from 1% of 1 degree of the Earth's curvature (see source, "What Are Statute Miles?").   

Statue Miles:  [ Conv ] [ 7 ]

Nautical Miles:  [ Miles ]

1 nautical mile ≈1.1507794 statute mile

Entering Time 

Time can be entered with several ways:

*  [ AM ] and [ PM ] keys.  We can use the shortcut method hhmmss or hhmm format to enter time.

*  The colon [ : ] key.   

*  The use hours, minutes, and second keys ([ Hr ], [ Min ], [ Sec ]).  

The [ Conv ] [ : ] changes the time format between 12-hour and 24-hour military time format.  

If we want to enter degrees-minutes-seconds, we must use the [ d:m:s ] key.  

Stopwatch 

The stopwatch can be started and stopped with the [ Timer ] key twice.  The stopwatch also has a split/lap feature with the [ S/Lap ].  While the stopwatch is running, a clock icon is on the display.

Timer

The timer is started with pressing the [ Timer ] key, entering the time, then pressing the [ Timer ] key again.   The NautiCalc Plus has a buzzer, not very loud, that can be turned on and off.  While the timer is going, we see a clock and star on the display.  The entire display flashes when the timer is completed. 

Not many calculators as a whole have the stopwatch and timer, so to have it is a nice feature.  

Now let's demonstrate some of the main calculations that are done wiht the NautiCalc Plus.  

Example:  Fuel Efficiency

If a tank can carry 15 gallons and has an average efficiency of 30 miles per gallon, what is the range?

[ On/C ] [ On/C ]

15 [ Conv ] [ Speed ] (Cap) (display has GAL)

30 [ Conv ] [ Time ] (Eff)   (display has MPG)

[ Conv ] [ Dist ] (Range)

Result:  RNG:  450 MI S  (450 statute miles)

Example:  Distance of Objects and Abeam

Traveling with 30° course with bearings reading 45°12' and 58°42', respectively.   You have traveled 5 nautical miles.   Find the distance bearing from the bearing object and distance abeam.  

[ On/C ] [ On/C ]

30 [ Course° ]   (CRSE)

45 [ d:m:s ] 12 [ 1stϕ ]  (BRG1)

58 [ d:m:s ] 42 [ 2ndϕ ] (BRG2)

5 [ Miles ] [ Dist ] (DIST   5  N MI)

[ Dist ]    (Display:   TRVL 5  N MI)

[ Dist ]    (Display:  DOBJ 5.6156432 N MI)

[ Dist ]    (Display:  BEAM 3.1139547 N MI)

TRVL:  distance traveled

DOBJ:  distance from object

BEAM:  distance abeam

Example:  Speed/Time/Distance 

If a boat travels 13.5 nautical miles and it took 2 hours 23 minutes, what is the speed of the boat?

[ On/C ] [ On/C ]

13.5 [ Miles ] [ Dist ]

2 [ Hr ] 23 [ Min ] [ Time ]

[ Speed ] 

Display:  SPD 5.6643357 K NO T  (5.6643357 knots, 6.5184011 miles an hour)

Closing Thoughts

The keyboard is solid with the keys have a nice feel to them.  The NautiCalc Plus comes with a protective wallet, where the user guide can fit in the pockets.   

I really like this calculator and how Calculated Industries makes calculators for specific applications.  I would have loved to have seen the NautiCalc had a longer life than it did.   It's really cool to collect.  

I'm now retired from purchasing vintage calculators online.  I still will be posting retro reviews in the next few months, including the recently purchased the Texas Instruments TI-57 LCD (1982) and HP 45 (1973).  I am also going to include calculators that have been sitting in the garage that I didn't get a chance to do a review on, such as the Radio Shack EC-4026 (Casio fx-4500P equivalent) and TI-65.  

Source:

Bollman, Mark.  "NautiCalc Plus" April 21, 2013.   Last Accessed March 24, 2022.  http://mathcs.albion.edu/~mbollman/CI/NCalc+.htm  

Jones, Louise.  "What Are Statute Miles?"   Sciencing.  April 25, 2017.  Last Accessed March 27, 2022.  https://sciencing.com/statute-miles-8358166.html  

Until next time,

Eddie

All original content copyright, © 2011-2022.  Edward Shore.   Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited.  This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author. 

TI-84 Plus CE: Updated Stopwatch and Timer Programs (OS 5.2)

TI-84 Plus CE:  Updated Stopwatch and Timer Programs

The programs STOPW52 and TIMER52 are updates of STOPWTCH and TIMER programs respectively.  The new versions take advantage of the new wait( and eval( functions.  You can find the original programs here:  http://edspi31415.blogspot.com/2016/07/ti-84-plus-ce-stopwatch-and-countdown.html

The ticks are now 0.1 seconds instead of a full second.

To find out about the new OS 5.2 for the TI-84 Plus CE, click here:  http://edspi31415.blogspot.com/2016/11/ti-84-plus-ce-os-update.html

TI-84 Plus CE Program STOPW52:

"STOPWATCH OS 5.2"

"EWS 2016-11-06"

ClrHome

0→T

While 1

getKey→K

Output(1,1,"TIMER")

Output(2,1,"PRESS ENTER TO STOP")

While K=0

getKey→K

ClrHome

Output(3,1,"SECONDS: "+eval(T))

Wait .1

T+.1→T

End

If K=105

Then

ClrHome

Output(1,1,"SECONDS: "+eval(T-.1))

Stop

End

End

TI-84 Plus CE Program TIMER52:

"TIMER FOR OS 5.2"

"EWS 2016/11/06"

Input "NO. SECONDS:",N

For(I,N,0,-.1)

ClrHome

Output(3,1,"TIME: "+eval(I))

Wait 0.1

End

ClrHome

(Thank you Jack Kessler for pointing our my previous typo (For line) - Eddie)

This blog is property of Edward Shore, 2016.

TI-84 Plus CE: Stopwatch and Countdown Timer

TI-84 Plus CE:  Stopwatch and Countdown Timer 

A clock in the TI-84 Plus?

It is common knowledge that the TI-84 Plus allows you to set the time and date.  What may not be so common is that the TI-84 Plus has two functions that you can use to time projects.

startTmr:   starts the TI-84’s timer. A time code, in a form of a real number, will be returned.  For example, 476286143.   For future calculations, store the result in a variable.

checkTmr(time code):  Uses the TI-84’s internal clock to determine how many seconds passed since the given time code. 

For example:

startTmr → T

checkTmr(T)

These commands are only found in the Catalog ([2^nd] [ 0 ]). 

Here are two basic programs that use these functions: basic stopwatch (STOPWTCH) and countdown timer (TIMER).

STOPWTCH:  Stopwatch for one event

TIMER:  Count down timer from a given number of seconds, up to 999,999 seconds (277.7775 hours or just over 11 ½ days).

TI-84 Plus CE Program STOPWTCH

ClrHome

startTmr→T

While 1

getKey→K

Output(1,1,"TIMER")

Output(2,1,"PRESS ENTER TO STOP")

While K=0

getKey→K

Output(3,1,checkTmr(T))

End

If K=105

Then

checkTmr(T)→S

Output(4,1,"SECONDS:")

Output(5,1,S)

Stop

End

End

TI-84 Plus CE: TIMER 

Input "NO. SECONDS:",N

startTmr→T

ClrHome

While checkTmr(T)≠N

N-checkTmr(T)→R

Output(3,1,"000000")    

Output(3,7-iPart(log(R)),R)

End

Output(3,7,"0")

Output(5,1,"TIME UP")

Note:   I tried several methods to display the timer while the seconds are counting down.  It wasn't enough just have Output(3,1,R) because after 10 seconds, the display would read:  10, 19, 18... Having ClrHome before Output(3,1,R) would make the time flicker too much.  

Pretty basic. This should work with any version of the TI-84 Plus since they have an internal clock.  The TI-83 and the TI-83 Plus do not internal clocks.

P.S. Any one purchased the white or gold limited edition TI-84 Plus CE yet?  I'm thinking about getting a gold one.  

Eddie

This blog is property of Edward Shore, 2016.

New Videos: TI-65 Timer, TI-55 III Intro and Programming Demo

TI-65 Timer Demo 

A short demonstration of the timer feature on the Texas Instruments TI-65 calculator (from 1986).  Timer functions are rare on calculators.  (The only other non-graphing calculator I can think of that had a timer was the Hewlett Packard HP-45, and it was a hidden feature).

Link:  https://www.youtube.com/watch?v=lwXDUlrIiwo


TI-55 III Intro and Demo

I recently purchased a TI-55 III programming calculator. This video presents a short demonstration of the calculator and a short program: the area of a circle.  The video is filmed with my phone.   My blog:  Eddie's Math and Calculator Blog:  edspi31415.blogspot.com

Link:   https://www.youtube.com/watch?v=dJYUnO0aV94

Enjoy!

Eddie


This blog of property of Edward Shore, 2016.