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Calculators: Handheld: Olympia CD60
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| Size (approx): |
92mm
x 115mm x 27mm (w,h,d) Weight g excluding batteries |
| Power: | 6.0V, 4 x AA size batteries. It accepts an adapter (12V DC, 1.8W - which seems rather high!) through a socket on the right side at the bottom. The battery compartment has a red ribbon to remove the batteries. |
| Case: | Wide format calculator made of white smooth and black matt plastic case. An oversized, neutral plastic display filter sits flat and flush with the case and wraps over the top area. Below this a heavily recessed metallic sticker is printed black and orange for the brand and on indication. The keyboard surround wraps around the bottom to mimic the display filter at the top. The round keys are long travel, soft-click type and work very well. There is a sturdy metal tag on teh top left hand side for a carry strap. |
| Display: | 6 digit blue VFD, with seventh symbol cluster for overflow and negative indication. |
| Features: | 4 function calculator with display shift |
| Age: | 1974 |
| Manufacturer: | Olympia Werke AG. Wilheimshaven, Western Germany, made in Japan. Serial number 06016376 is on a sticker inside the battery compartment. |
| Comments: | Most calculators are portrait, some landscape, but this one is in the middle and is nearly square. It does fit in the hand nicely so I wonder why more didn't copy the idea. This appears to be a branded Panasonic 660 (JE-660U). The logic is sound with the full 12 digit precision being available but recovery is poor. It suffers the negative zero bug and the numbers are left leading rather than the modern right leading. |
| Components: | 1 x cpu; Mitsubishi MA8168P 2636
(date code January 1976) , 24 pin DIL, 0.6" width 1 x 6 digit plus symbol cluster VFD; single round faced tube: Futaba 7-CT-02 4C (March 1974) , Japan 4 x transistors 12 x diodes 9 x capacitors 6 x resistors 2 x resistor arrays 1 x transformer |
| Boards: | The whole assembly sits loose in the case and the main board (KP-8 YLPRD 3000) is joined to the keyboard assembly by a 13-way ribbon cable. |
| Construction: | Remove the single screw from inside the battery compartment. You will also see two black lugs in the compartment which need to be gently levered - be careful not to break the side of teh white case. The whole calculator assembly will then lift out of the white case and the display filter will drop off! |
| Logic comments: | The (C) button is used to clear the whole calculator as there is no cancel entry function |
| Overflow on number input is suppressed as inputting a thirteenth digit is ignored | |
| You can input more than six digits, but on pressing the seventh the right arrow on the far left lights to tell you there are more than six. You can see the extra numbers by using the (<->) key. You can have up to eleven digits after the decimal point in a similar way. | |
| An overflow shows the far left arrow and all six decimal points alight and is not recoverable | |
| Divide by zero shows the far left arrow and all six decimal points alight and is not recoverable | |
| There is automatic constant on all four functions | |
| Negative numbers are shown by a "-" in the far left (seventh) symbol cluster thereby allowing full twelve digit negative numbers. | |
| It suffers the negative zero bug: key in 1-2 with (1)(-)(2)(=) to give "-1" now add one (+)(1)(=) to give "-0" |
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With the assembly removed from
the case you can see the small, very densely populated main board.
Notice the two-character symbol cluster on the far left of the Futaba VFD
unit.
A small black card light blocker has been removed for this image. |
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