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Calculators: Handheld: Sharp Elsimate EL-210 (type I)
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Size (approx): | 77mm x 129mm x 19.5mm (max) (w,h,d) Weight 124g excluding batteries |
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Power: |
3V through 2 x AA size batteries. Also accepts adapter (3V DC, EA-17E) which can be used as a charger through a socket on the top side on the far left. Consumption 0.35W. Back says use rechargeable battery EA-18B, 2.4V. The on/off switch is on the left hand side in line with the top line. Battery life is quoted at 12 hours (dry) and 10 hours (rechargeable). | |
| Case: | Slim two piece plastic case, the front being white smooth plastic and the back brown smooth plastic. Small metallic sticker above the display is printed black for the company name and model number and sits in its own recess. An oversized green plastic display filter is flat and inset and gives a reasonable display - letting in a bit too much light. They keys are squishy but work well. | |
| Display: | 8 digit green VFD with a ninth (right-most) digit used for minus, memory and error indictors | |
| Features: | 4 function calculator with percentages, square root, register exchange and four function memory | |
| Age: | 1980 | |
| Manufacturer: | Sharp Corporation. Made in Korea. Serial number is on a sticker on the inside of the battery compartment - but mine is worn. | |
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Comments:
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Typical later compact Sharp that fits quite well in the hand especially with the on/off switch at perfect thumb position. White bodies on these type of models always fade badly in my experience. Odd right hand digit use for error flags and minus is common to Sharp. The logic is sound. At such a late date it is odd to see the high component count and the use of metal panels in the keyboard design. This must have been one of the last VFD calculators. There is a type II of this model in black |
| Components: | 1 x cpu: Sharp LI2026A 0G5 009
(1980? date code), 28 pin DIL, 0.6" width black plastic 1 x 9 digit VFD; single glass tube flat faced, Futaba 9-ST-20 OJ Made in Korea 1 x transistor 4 x diodes 5 x capacitors 3 x resistors 1 x transformer; TDK 1457 |
| Boards: | The main cpu board (F1746A) is fixed to the keyboard assembly by the three ribbon cable screws and is joined by a 16-way ribbon cable. The keyboard assembly is metal backed, very sturdy and fixed to the front with two screws. |
| Construction: | Remove the two screws from the back. Quite difficult to open without damage. The best way appears to be by levering out the two lugs on the bottom edge and hinging from the top two lugs. |
| Logic comments: | The (CE) button is used to clear last entry of a number and the (C) to clear the whole calculator. |
| Overflow on number input is suppressed, typing in a nine digit number ignores the ninth digit | |
| An overflow shows the result and "C" ("E" if negative) in the far right (first) digit and is recoverable using (CE) | |
| Divide by zero shows "0.C" and is not recoverable | |
| There is automatic constant on all four functions | |
| Negative numbers are flagged by a "-" sign in the far right (first) digit thereby allowing full eight digit negative numbers. | |
| Negative square roots are not allowed give you "0.C" which is not recoverable. | |
| When memory store is in operation the far left (first) digit decimal point lights up | |
| No bugs found |
