Review: Casio MC-12M Shop Calculator
Just The Facts:
Model: MC-12M Shop Calculator
Company: Casio
Type: Desktop
Display: 12 digits
Battery: Solar and Battery (AA battery backup)
Logic: Chain
Memory: Two: M and Grand Total
Double Zero Key
I purchased this calculator several months ago at a WalMart for about $11.50.
Features:
Cost/Sell/Margin Calculation
Change Function
Square Root
The display is set an angle so it is tilted towards the user. I find the keyboard a pleasure to use. My hands may be a little big, but with the right size of hands you can speed type on the MC-12M. The keys are fast and responsive.
Memory
There are two memories within the MC-12M: the independent memory M and the Grand Total key.
The independent memory works with the usual memory plus (M+) and memory minus (M-) keys. The recall (MR) and clear memory (MC) keys are separate keys on the MC-12M.
The grand total memory is activated every time you press the equals [ = ] key. On the MC-12M, the grand total memory is automatic. The grand total memory is cleared when either [AC/ON] is pressed or the calculator is turned off.
The Change Feature
The big selling feature of the MC-12M Shop Calculator is the [CHANGE] button. You enter an amount and press [CHANGE], like you were handed cash in a transaction. When it is pressed, it compares the amount entered against the amount in the grand total memory registered. The independent memory is not used in the change feature.
Example:
You have a $100 bill (C-note) and purchase the following:
1 SD card for $19.95
1 desktop calculator for $11.49 ;)
3 reams of paper for $5.00 each (on sale)
15 pens at $0.49 each
2 USB drives, 32GB for $10.60 each
Sales Tax: 9%
Keystrokes:
[AC/ON]
19.95 [ = ]
11.49 [ = ]
3 [ × ] 5 [ = ]
15 [ × ] .49 [ = ]
2 [ × ] 10.60 [ = ]
[ GRAND TOTAL ] (Display: 74.99)
[ × ] 9 [ % ] [ = ]
[ GRAND TOTAL ] (Display/Total Invoice: 81.7391 [$81.74] )
100 [ CHANGE ] (Change: 18.2609 [$18.26] )
Percent Change
You can calculate percent change with the use of the minus and percent keys.
%CHG Keystrokes: new [ - ] old [ % ]
Calculate the percent change from 14.75 to 19.85?
19.85 [ - ] 14.75 [ % ]
Percent Change: 34.5762711864 (34.5762711864%)
Wishes and Verdict
There are two things the MC-12M Shop Calculator have:
Fix Decimal Selector: This would be great for the shop because most currency calculations work with 2 decimal places. My selection of choices would be 0, 1, 2, 3, 4, 6.
I would also like to see the Add Mode added.
Since this is a shop calculator, I can imagine people using this calculator to calculator areas and volumes, so a π key would be nice.
π ≈ 3.1415926535
This calculator is nice to operate and hold and yes, I like the square root (which should be present on more desktop calculators). Worth a look.
Eddie
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