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Calculators: Handheld: Lloytron Accumatic 341 (aka E341)
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Size (approx): | 66mm x
97mm x 20mm (max) (w,h,d) Weight 84g excluding batteries |
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Power: |
4.5V DC, 3 x AAA size batteries. It does not accept an adapter, quoted at 300mW power. | ||
| Case: | Three-piece miniature version of the familiar Lloytron calculators. Grey smooth plastic back and front with white gloss plastic sides that slide down in the same manner as an Adler of the same period. You have to pull down the sides in order to get the battery compartment open. The front has an metallic spray-paint keyboard surround which is printed white for the extra functions. A grey-blue flat display filter wraps over the top and is printed white with company and model names. | ||
| Display: | 8 digit blue (narrow digit) VFD with a ninth digit for minus, memory and error indication | ||
| Features: | Standard four functions with percentages and four function memory (using two-key access) | ||
| Age: | 1976 | ||
| Manufacturer: | Lloytron, Series 255A, Serial No. 100667, Made in Japan. | ||
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Comments:
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Very small Lloytron that fits in the palm of the hand nicely. Cute narrow VFD display leads me to believe that this was targeted at the "Ladies handbag" market. White painted memory functions against a silver background are, however, hard to see. The logic is quite good only let down by the negative zero bug. The novel side slipping is nice. |
| Components: | 1 x cpu: Mitsubishi M58618-84P
5Y1X, 24 pin DIL, 0.6" width, black plastic 1 x 9 digit single tube VFD display 2 x transistor 3 x diodes 4 x capacitors 2 x resistor array 8 x resistors 1 x transformer |
| Boards: | The keyboard (Ref GK193-3 Gico Japan L6 51-4-3) (which is the date code 4 March 1976) is joined to the main cpu board (Ref L81M-33) via a row of 13 stiff wires. The whole subassembly floats free in the case. |
| Construction: | Remove the single screw from the back and the whole front of the case lifts off easily. |
| Logic comments: | (C/CE) is used once to cancel the last number entered and a second time to clear the whole calculator. |
| There is automatic constant on all four functions | |
| Input overflow is suppressed, inputting a ninth digit is ignored | |
| Negative sign is shown in the far left (ninth digit) thereby allowing eight digit negative numbers. | |
| Divide by zero shows zero and "C" in the far left (Ninth) digit and is recoverable using (CE) | |
| Overflow shows the result and "C" (or "E" if negative) in the far left (ninth) digit and is recoverable using (CE) | |
| Memory storage is flagged by the far left (ninth) decimal point alight | |
| Memory functions are evoked using a two keystroke system; (M)(+) being used to add to the memory | |
| It suffers from the negative zero bug: key in (1)(-)(2)(=) to give "-1" now add one (+)(1)(=) to give "-0" |
