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Calculators: Handheld: Decimo Vatman
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Size (approx): |
83mm
(max) x 132mm x 30mm (max) (w,h,d) |
| Power: | 6.0V DC, 4 x AA size batteries, 0.3W. Also accepts adapter/charger (undefined) through a top side socket on the right. | |
| Case: | Chunky two piece plastic case. Bottom is beige, top is matt black. Green display filter has painted logo. Decimo logo is metal inset panel. Keyboard surround is brushed aluminium. Top is slightly tilted upwards, including the back which causes the calculator to rock ,especially with no batteries to weigh it down. Top side three way switch is labelled CH for charge, and ON. Sticker on back warns "Caution: never move the switch to "CH" position unless you replace the UM-3 batteries with the re-changeable nickel cadmium batteries." | |
| Display: | 8 digit green VFD display - ninth used for minus and error signs. | |
| Features: | Basic four function with percentages, square root. | |
| Age: | 197? | |
| Manufacturer: | Decimo Electronic Handy Calculator. Made in Japan. Serial No. 70101069 | |
| Comments: | Classic calculator which has a quality feel in the hand. Logic sound. Imbalance on the desk and odd keyboard layout (why didn't they put the square root down to make a complete square matrix keyboard?) let it down. Original black plastic case is top flap popper closing. For those non-UK viewers, VAT stands for Value Added Tax - the purchase tax system in the UK. |
| Components: | |
| Boards: | |
| Construction: |
| Logic comments: | The Clear Entry key (CE) is used to clear an input number, the clear (C) key is used to completely reset the calculator |
| Overflow on the input of a number is suppressed | |
| The constant function is automatic on multiply and divide only | |
| The negative sign is shown on ninth digit to allow 8-digit negative numbers | |
| Negative square roots result in "E" in the ninth digit and is not recoverable | |
| A divide by zero or overflow error is shown by an "C" in the ninth digit. Neither is recoverable. |
