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Collection Item |
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Olivetti Underwood Logos 400aPD
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| Brand: |
Olivetti-Underwood. |
| Model: |
Logos 400aPD. |
| Origin: |
Made in Hong Kong in 1979 based on chip datecodes.
I believe this was the last period of production of this Logos series. |
| Type: |
Basic desktop printing calculator with display. |
| Functions: |
4-Basic function plus memory, grand total and item count.
Works only with AC plug, with no battery support. |
| Display: |
One block of 13 VFD digits with 12 numerals and 1 digit
for indication of negative number, memory and overflow condition. |
| Keyboard: |
Numerals plus decimal point, Basic operations (+, -, *, %),
Memory keys (Plus, Minus, Subtotal and Total) with green background, Grant Total, Item count, Print single line and Clear Entry/All.
Four sliding switches for: Automatic Print mode On/Off, Account mode On/Off, Round mode and Decimal point position. |
| Main chips: |
Rockwell 10934CC with date code 7908
and a Rockwell A6800EE chip with datecode 7907. Also I can identify a Texas Instruments TIP110 bipolar single Darlington NPN transistor
with datecode 7901 and two Texas Instruments ULN2002A-CU Darlington transistor arrays with datecodes 7816.
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| Remarks: |
Probably this calculator was made for the US market but
it was sold in Argentina in a retail store as a new brand calculator with a voltage conversion from 110 to 220v. Curiously there is
no indication of 220v, labels on the back and on the power supply indicates 115v. I had to check several times with the original
seller that the actual working voltage is 220v!!! |
| Size: |
14.76 x 13.00 x 3.54 in, 375 x 330 x 90 mm. |
| Accesories: |
Detachable power cord and some paper rolls. |
| Condition: |
(9/10) Very good near mint. No marks on casing and no wear
on keycaps, so I believe this calculator is almost unused. |
| Pictures of my Logos 400aPD. |
| Pictures taken with |
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