Calculated Industries Calculators: Memory Registers and Tape

Calculated Industries Calculators:  Memory Registers and Tape

Introduction

This post covers five Calculated Industries calculators:

Tradesman Calc - 4400

Construction Master 5 - 4050

Machinist Calc Pro - 4087

Pipe Trades Pro - 4095

ElectricCalc Pro - 5070

Memory Storage and Store Arithmetic

The calculators do not have storage arithmetic other than the independent memory register (M).   

Tradesman Calc - 4400	Construction Pro 5 - 4050	Machinist Calc Pro - 4087	Pipe Trades Pro - 4095	ElectricCalc Pro - 5070
M, registers 1 - 9	M only	M, registers 1 - 9	M, registers 1 - 9	M, registers 1 - 9
M+, M-	M+, M-	M+, M-	M+, M-	M+

Tape Memory

All the calculators listed except the ElectricCalc Pro has a tape listing memory.  The tape memory records all the arithmetic (+, -, x, ÷), percent (%), and parenthesis keystrokes.  For the square (x²) and square root (√), the numeric results are recorded.  The tape memory does not record any work involving any of the solver keys.

Tape Memory Controls

Clear the Tape:  [ On/C ] [ On/C ] (or do a Clear All)

Enter Tape Mode: [ Conv ] [ = ]

Scroll in Tape Mode: [ + ], [ - ]

Exit Tape Mode:  [ = ]

The table lists the number of steps can be stored:

Tradesman Calc - 4400	Construction Pro 5 - 4050	Machinist Calc Pro - 4087	Pipe Trades Pro - 4095
20	20	30	30

Sample Problems and Tape Memory

Problem 1:  1.99 x 50 + 100 =    (Result: 199.5)

All calculators return the same tape (spaces added for clarity):

01  1.99

02 x 50

03 + 100

TTL = 199.5

Problem 2:  4 1/2 in + 3 3/8 in =  (Result:  7 7/8 in)

All calculators return the same tape:

01   4 1/2 INCH

02 + 3 3/8 INCH

TTL = 7 7/8 INCH

Tape with arithmetic functions will work with units.

Problem 3:  ( 1.99 x 20 + 25 ) = + 10% =   (Result: 71.28)

Tradesman Calc (4400) tape:

01  ( 1.99

02  x 20

03  + ) 25

SUB = 64.8

05 +% 10

SUB % 71.28

TTL = 71.28

Pipe Trades Pro (4095) tape:

01  1.99    (first parenthesis is messing)

02  x 20

03  + ) 25

SUB = 64.8

05 +% 10

SUB % 71.28

TTL = 71.28

Construction Master 5 (4050) tape and 

Machinist Calc Pro (4087) tape:

The parenthesis are left out since neither of these calculators have parenthesis.  I have left the calculations in that order to ensure proper order of operations:

01  1.99    (first parenthesis is messing)

02  x 20

03  + 25

SUB = 64.8

05 +% 10

SUB % 71.28

TTL = 71.28

Problem 4:  15 x^2 x π  (Result:  706.85835)

All calculators return the same tape:

01 225   (shows 15^2)

02 x 3.141593

TTL = 706.85835

Problem 5:  24 x 59 = √   (Final Result:  √1416 = 37.62978)

All calculators return the same tape:

01 24

02 x 59 

TTL = 1416

The square root is totally ignored!

Problem 6:  24 √ x 59 √ =    (Result: 37.62978)

All calculators return the same tape...

01 4.898979 

02 x 7.681146

TTL = 37.62978

except the Trademsan Calc (4400) - sometimes:

01 24

02 x 7.681146

TTL = 37.62978   (this doesn't make sense!)

However, most of the time, I get the proper tape above.  This just a thing to watch out for.  

Note that √(24 * 59) = √24 * √59

Curious that none of the Calculator Industries finance and real estate calculators have the tape feature.  

The Recall Memory Feature:  Additional Calculations

The Recall Memory (Rcl) of the independent memory register returns three calculations:

TTL:  total or sum

AVG: average of all entries by M+

CNT:  count of all entries by M+

[ Rcl ] [ M+ ]: To display the contents of the independent register (total).

Keep pressing [ M+ ] to cycle through average, count, total.  Press [ On/C ] to exit.  

The notable exception is the ElectriCalc Pro:

[ Rcl ] [ 0 ]:  To display the contents of the independent register (total).

Keep pressing [ 0 ] to cycle through average, count, and total.  Press [ On/C ] to exit.  

Sample Data:

410, 359, 367, 388, 384

Recall memory M until it's cleared.  You can store 0 into Memory M or press RCL twice.  Insert presses of [ Conv ] when needed.  

410 M+

359 M+

367 M+

388 M+

384 M+

Note:  On the ElectriCalc Pro, press [ Stor ] [ M+ ] to use M+.

RCL M: 

TTL 1908  (TOTAL on the Machinist Calc Pro)

(Press M again)

AVG  381.6

(Press M again)

CNT  5   (COUNT on the Machinist Calc Pro)

(Press M again to cycle.)

That is a tour of the memory features on some of the industrial calculators from Calculated Industries.  Hope you find this useful!

Eddie

All original content copyright, © 2011-2021.  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. 

HP Prime & TI-84+: Bolt Pattern

HP Prime & TI-84+:  Bolt Pattern

Bolt Pattern

The program BOLTPAT will calculate a bolt pattern given:

X = center, X coordinate

Y = center, Y coordinate

N = number of bolts

D = diameter of the circle

No angle of rotation is assumed.

Coordinates of each bolt can be calculated by:

X_k = (d/2*COS(360*k/n)+xc)

Y_k = (d/2*SIN(360*k/n)+yc)

Where k = 0 to n-1

The OC-Distance between each bolt is calculated by calculating the linear distance between neighboring bolts.

Output:

Each point where the bolt should be placed.  In addition, the on-center distance between bolts is displayed.  Finally, each of the coordinates will be presented in a list.  For the TI-84+ version, the list will be stored in list L6.

HP Prime:  BOLTPAT

EXPORT BOLTPAT()

BEGIN

// EWS 2012-02-28

// No pre angle tilt

// Degrees

HAngle:=1;

// Data

LOCAL z0,z1,xc,yc;

LOCAL z,n,d,k,l,xp,yp;

INPUT({xc,yc,n,d},"Bolt Spacing",

{"xc:","yc:","n :","d :"},

{"x center","y center",

"number of bolts",

"diameter"});

l:={};

// Calculation

PRINT();

PRINT("x + y*i");

FOR k FROM 0 TO n-1 DO

xp:=(d/2*COS(360*k/n)+xc);

yp:=(d/2*SIN(360*k/n)+yc);

IF k==0 THEN

z0:=xp+i*yp;

END;

IF k==1 THEN

z1:=xp+i*yp;

END;

l:=CONCAT(l,{xp+yp*i});

PRINT("("+xp+","+yp+")");

END;

PRINT("OC-OC: "+ABS(z1-z0));

RETURN l;

END;

TI-84+: BOLTPAT

a+bi

Degree

Disp “X: X CENTER”

Disp “Y: Y CENTER”

Disp “N: NO. BOLTS”

Disp “D: DIAMETER”

Prompt X,Y,N,D

For(K,0,N-1)

D/2*cos(360*K/N)+X→S

D/2*sin(360*K/N)+Y→T

If K=0

Then

S+T*i→U

{U}→L6

End

If K>0

Then

Augment(L6,{S+T*i})→L6

End

If K=1

Then

S+T*i→V

End

Disp “POINT”,K

Disp S

Disp T

Pause

End

Disp “OC-OC:”

Pause abs(U-V)

Disp L6

Example:

Build a bolt pattern with 5 bolts of a circle of diameter of 3 units.  The center of the circle has the center (4, 1).  (X = 4, Y = 1, N = 5, D = 3)

Bolts should be placed at the following points:

(5.5, 1)

(4.4635, 2.4266)

(2.7865, 1.8817)

(2.7865, 0.1183)

(4.4635, -0.4266)

OC-Distance:  1.7634

Note:  Bolt Patterns can easily be calculated with the Machinist Calc Pro, original (Model 4087) or Pro 2 (Model 4088) (including angle of rotation). 

This blog is property of Edward Shore – 2015.

My Calculated Industries Calculator Collection

The company Calculated Industries (http://www.calculated.com/) manufactures specialized calculators.

Here is my small collection:

Machinist Calc Pro

I bought this calculator today at a pawn shop in Pomona. It came with the box, instructions, and the calculator in an Armadillo Gear case. I never seen a calculator being in such an industrial case before. This calculator is specialized in machinery calculations with a built in tables of drill points, drill sizes, and thread sizes. Trigonometric functions are featured (Adj, Opp, Hyp, Angle for right triangles and Sine, Cosine, Tangent for general trigonometry).

The manual is a good size book and as of today I have yet to go through it and do the examples.

Qualifier Plus IIx

This calculator specializes in real estate calculations, which include finding qualified amounts, time value of money, and PITI (principal, interest, taxes, & interest). I picked up this calculator at another pawn shop in Pomona, which is sadly no longer there.

The next three calculators deal with construction.

ProjectCalc Plus

I think I got all three of construction calculators from Home Depot throughout last year.

First is the simple calculator. The calculator had built in tables for concrete, carpet, and tile sizes (and more).

Material Estimator

To me, the Material Estimator is the big cousin of the ProjectCalc Plus. The Material Estimator has all the features plus an electric tape to keep track of calculations, a hard cover that stores the manual (which is really neat), and it is solar and battery powered.

Construction Master 5

The Construction Master takes a different specialty than the ProjectCalc and Material Estimator. The Construction Master focuses on stairs, roofs, risers, and walls. Like the Material Estimator, the Construction Master has an electric tape and the manual is stored in the calculator's case.

What is common for all the construction calculators and the Machinist Calc is that we can make calculations using yards-feet-inch, meters-centimeters-millimeters calculations and conversions. This is a super feature.

I really could use some more time learning the features of these calculators. So there is my collection.

Eddie


This blog is property of Edward Shore. 2013