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Calculators: Handheld: Commodore 385R
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Size (approx): | 78.5mm x
104.7mm x 26.9mm(max)
(w,h,d) |
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Power: |
6.0V DC, internal rechargeable battery, 0.2A. Also accepts adaptor (undefined though 3V centre positive worked fine) through a socket on the top side in the middle. | ||
| Case: | Two-piece matt white plastic case in a small dumpy design used in many of the early minuteman series. A large plastic plate surrounds the red display filter and has a grey printed logo. The keyboard surround is matt black plastic. Typically commodore colours, the keys are short-travel squishy but work quite well. | ||
| Display: | 8 digit red LED with ninth digit for negative and error indication. | ||
| Features: | Four function with percentages | ||
| Age: | 1975 | ||
| Manufacturer: | Made in England, Serial No. 107507 | ||
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Comments:
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Sits in the palm of your hand quite easily with a bright but limited view from the display. The original shaped carry case is soft dark brown plastic with flip over top and popper closing on the front. |
| Components: | 1 x cpu: grbp-01-b 7510 (date code week
10 of 1975) 24 pin DIL, 0.6" width grey ceramic 1 x IC display driver: Toshiba T1347 5K 20 pin DIL, 0.3" width black plastic 1 x 9 digit red LED 1 x transistor 3 x diodes 4 x capacitors 4 x resistors 1 x transformer 1 X double cell sealed battery unit. |
| Boards: | The keyboard assembly (GICO 50.6.25 L10) it fixed to the front and sits underneath the main cpu board (Part No. 200399 Art No. 200400 TW-17 Rev A). They are joined by 13 wires. There is a mini piggy-back board with the DC-DC converter circuit. |
| Construction: | Remove the two long screws from the back. The rear section comes off easily hinged from the bottom. |
| Logic comments: | Unable to test |
