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Calculators: Handheld: Voesa 3000
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Size (approx): |
70mm
(max) x 134mm x 24mm (max) (w,h,d) |
| Power: | 9.0V DC, 1 x PP3 size battery. Also accepts adapter/charger (undefined) through a left side socket about a third of the way down. | ||
| Case: | Cheap feeling two piece shiny black plastic case. Edges are a bit sharper than you would normally expect. Brushed aluminium panel for the brand / model info above the display and keyboard surround below. Titled up towards the back and widens at the top to accommodate the 9V battery. Cheap battery terminals are just two metal tags rather than a proper 9V battery connector. Buttons make a positive load click. Blue and black colour scheme of keys reminiscent of a Texet calculator. On/off sliding switch on the right side, one third of the way down. | ||
| Display: | 8 digit red LED with bubble lens display - ninth used for minus sign. | ||
| Features: | Basic four function with percentages, reciprocal and four-function memory. | ||
| Age: | 1979 | ||
| Manufacturer: | Serial Number VP272080. Made in Hong Kong. | ||
| Comments: | One of many similar clones which is very likely to be a standard design calculator. Cheaply made but works well enough. Logic quite robust except for odd overflows. See the Same Calculator page for more clones. |
| Components: | 1 x cpu: MOS MPS 7760 2179 (date
code week 21 of 1979) 22 pin DIL 1 x 9 digit red LED unit with bubble lenses No other components |
| Boards: | The main keyboard board (Ref SH2 Rev 0) floats over the main cpu board and is connected by shrouded set of 17 stiff wires. |
| Construction: | Warning the case is held together by lugs in the lower section. It is very difficult to open without damaging the edging - not recommended. If you manage it, then the whole front section of the case can be removed, with the keyboard membrane still attached to the front. |
| 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 | |
| There is no constant function on any of the four operators | |
| The negative sign is shown on the immediate left digit pushing into the ninth to allow 8-digit negative numbers | |
| There is no indication of memory storage - you have to remember it. | |
| Overflow errors are shown as the result with no decimal point - it is recoverable by division or in fact you can still carry on multiplying until it eventually results in zero! | |
| A divide by zero results in "00000000" and is recoverable using (X/Y) |
