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
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