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. 

Review: Calculated Industries Tradesman Calc

Review: Calculated Industries Tradesman Calc

Quick Facts:

Model:  Tradesman Calc, Model Number 4400
Company:  Calculated Industries
Type:  Scientific, Construction
Years:  Introduced 2012
Display:  8 digits
Batteries:  Battery, 1 CR2016
Retail Price:  $44.99, you can pay lower on internet searches.  I paid $29.95 from WalMart.
Memory Registers: 10, Registers 1 through 9, M 

Features

*  Units and unit conversions
*  Right Triangle Calculations
*  Ratio Calculations
*  Trigonometry
*  Geometry Calculations

Other mathematical functions:  reciprocal, powers, roots, degrees/degrees-minutes-seconds, parenthesis

The calculator operates in one of two modes:  Order and Chain

Order uses order of operations while chain completes calculations as keys are pressed (like a four-function calculator).  Order of operations is the default setting. 

Fraction settings allow you to set the largest denominator, up to 64. 

Unit and Unit Conversions

In keeping with the other construction calculators, the Tradesman Calc offers units and unit conversions.  Notice that the shift key is labeled Conv for this purpose.  You can easily add, subtract, multiply, and divide measurements.  For example to add 4 feet 5 inches with 6 feet 7 1/2 inches, press:

4 [ Feet ] 5 [ Inch ]   (Display:  4 - 5   FEET INCH)
[ + ] 6 [ Feet ] 7 [ Inch ] 1 [ / ] 2
[ = ]

Display:  11 - 0 1/2  FEET INCH  (11 feet, 1/2 inch)

You can convert the answer to decimal feet like this:

[ Conv ] [ Feet ]

Display:  11.041667  FEET

To convert to Inches: 

[ Conv ] [ Inch ]

Display:  132.5  INCH

To meters:

[ Conv ] [ m ]

Display:  3.3655 M

Units also include temperature (°F, °C), weight and mass (lbs, dry oz, tns, kg, grams, metric tons, wt/vol), and length (yds, feet, inch, m, cm, mm Bd Ft). 

Right Triangle Calculations 

The [ Adj ] (adjacent side), [ Opp ] (opposite side), [ Hyp ] (hypotenuse), and [Angle] (angle and adjacent angle) keys are used to solve right triangle problems.  Any two of the variables can be known to solve for everything else.  For example:

Known:  Adjacent (run):  15 feet,  Opposite (rise):  13 feet 8 inches

[Conv] [ × ] (Clear All)  (as recommended by Calculated Industries)
15 [ Feet ] [ Adj ]
13 [ Feet ] 8 [ Inch ] [ Opp ]

[Hyp] 20.292308 feet
[Angle] 42.336999°
[Angle] 47.663001° (adjacent angle)

Ratio Calculations

Use the X, Y, and X:Y commands to store and calculate ratios.  Example:

For the ratio 5/8 find X when X/18.

5 [Conv] [ Adj ] (X)   (stores 5 in X)
8 [Conv] [ Opp ] (Y)   (stores 8 in Y)
[Conv] [ Hyp ] (X:Y)   Result:  1 = 1.6

18 [Conv] [ Opp ] (Y)  (stores 18 in Y)
[Conv] [ Adj ] (X)    Result:  X = 11.25

Trigonometry

The Tradesman Calc has the trigonometric functions sine, cosine, and tangent, with inverse.  All angles are measured in degrees.

Geometry

Geometric calculations includes circles, arcs, and regular polygons (including inside and outside diameter). 

Keyboard

The keyboard is a pleasure to use.  Aside it being blue (blue is my favorite color), the keys have a pleasant touch and register perfectly.  The display is clear with prompts.  The Tradesman Calc comes with a hard case cover.  On the back of the calculator, there is a slot for a battery and another for user guide. 

Verdict

For a trade industries, I recommend this calculator.  The calculator has a convenient solvers for common geometry shapes along with unit mathematics. If you are going to purchase the Tradesman Calc, I recommend so shopping for less than retail price. 

Eddie

All original content copyright, © 2011-2020.  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.