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Calculators: Handheld: Prinztronic P200
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Size (approx): | 72mm(max)
x 123mm x 20mm(max)
(w,h,d) Weight 104g excluding batteries |
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Power: |
3V DC, 2 x AA size batteries. It accepts an adapter/charger (3V 100ma 3.5mm plug centre positive) through a socket on the bottom side on the far right. | ||
| Case: | Made from a two-piece gloss finish dark grey and beige plastic case with rounded edges and corners. There is an oversized green display filter that gives a bright display. It contains a small metallic label that is printed black and blue with the company and model name and sits in its own recess. A brushed aluminium keyboard surround has the on label printed in black. The keys are small and squishy but work well. | ||
| Display: | 8 digit green VFD, with a ninth digit for negative and error indication | ||
| Features: | Standard four functions with percentages and square root | ||
| Age: | 1976 | ||
| Manufacturer: | Undefined manufacturer, made in Japan, with no detectable serial number | ||
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Comments:
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Compact calculator that is nice to hold with its smoothed edges, through the display is a bit narrow. The logic is poor with no recovery and several major bugs. |
| Components: | 1 x cpu: Sharp LI2006 5L2 (date
code November 1975), 28
pin DIL, 0.6" width 1 x 9 digit VFD unit: single tube round front: Itron DP95A4 1 x transistor 5 x diodes 7 x capacitors 10 x resistors 2 x resistor arrays 1 x transformer |
| Boards: | The keyboard assembly (GICO 51.2.??) (date code February 1976) sits loose on top of the main cpu board and is connected via 16-way ribbon cable. The whole assembly sits loose in the calculator. |
| Construction: | It is very difficult to prize apart the case that is held together by internal lugs only. You need to push the rear section sides in to pop the lugs but damage is very likely so I would not recommend it. Eventually the front can be lifted off. |
| Logic comments: | (CE) is used to cancel the last number entered and (C) to clear the whole calculator. |
| There is automatic constant on multiply and divide only | |
| Input overflow is suppressed: keying a ninth digit is ignored | |
| Negative numbers are shown with a "-" in the far left (ninth) digit thereby allowing full eight-digit negative numbers | |
| Divide by zero shows zero and "C in the far left (ninth) digit and is not recoverable | |
| Overflow shows the result with "C" (or E if negative) in the left most (ninth) digit and is not recoverable | |
| Negative square roots are not allowed and result in C with zero result | |
| It suffers the pseudo fixed decimal bug: key in (1)(+)(.)(0)(0)(0)(=) to give "1.000" which remains a fixed three decimal digit number until you need more | |
| It suffers the trailing zero on divide bug: key in (9)(χ)(3)(=) to give "3.0000000" which remains as the pseudo fixed decimal bug |
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This scan shows the front of the case removed
and the keyboard assembly hinged out of the way.
Quite a compact assembly with the tall components bent over. As the display tube has no mounting brackets or guides it can easily sit at an angle as the tension created by the connecting wires is considerable. Compare with the Prinztronic MP300. |
