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Calculators: Handheld: Elka 101(type I)(green)
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Size (approx): | 70mm x
135mm x 30mm (max) (w,h,d) Weight 126g excluding batteries |
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Power: |
6.0V DC, 4 x AA size batteries. Does not accept an adapter. There is a green ribbon to aid battery extraction. | ||
| Case: | Lovely solid green backed calculator with smooth rear and slightly matt black front piece. Brushed aluminium panel with black printed text surrounds switches. Back top of calculator is raised by about 30 degrees and the orange display filter raised even more with a "fine-line" design. The lower front edge has the brand and model number printed in white. A typical 70s design that was also available in yellow (and maybe more colours). The keys are bouncy and a little hollow sounding. | ||
| Display: | 8 digit red LED with bubble lens and ninth digit for minus sign, error and memory flag | ||
| Features: | Four function with percentages and two function memory. Switch for memory on/off. | ||
| Age: | This one is 1974 but the design goes back as far as 1973. | ||
| Manufacturer: | No information but believed to be produced by ISOT, exporter: ISOTIMPEX. Made in Bulgaria. Serial number 055740 on sticker in battery compartment. | ||
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Comments:
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Unusual Bulgarian design with great bold colours. You can see a different model (with the same name) in yellow with an additional decimal point switch and different display. |
| Components: | Main
Board: 1 x cpu: Rockwell A1030PE 15330 7431 (week 31 of 1974) 42 pin staggered DIL, 0.6" width 2 x logic chip Texas SN75492N 7426 16 pin DIL, 0.3" width 11 x transistors 10 x diodes 9 x resistors 5 x capacitors 1 x transformer TP022 Keyboard Assembly: 1 x 9 digit (red plastic) bubble lens led unit 6 x diodes 8 x resistors |
| Boards: | Small cpu board is connected to the full sized keyboard and display board by 29-way ribbon cable. The keyboard assembly (Ref KK813) and main board is secured using the case fixing screws. |
| Construction: | Remove the four screws on the back. Two of these screws are hidden inside the battery compartment. The case easily separates. |
| Logic comments: | Mine needs a bit of work before it will function! |
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