Sharp QT8B
Sharp QT8B (Micro Compet)

Details:

A very early machine using LSI chips. Probably the first using rechargeable  batteries making it truly portable.

The display uses rather artistic digits with a kind of half-size zero.


Usage:

Note:  Before it can be used it needs two resets using the “C” key.


Addition/subtraction:

As in mechanical calculators using the + =” key and “- =” key


Multiplication:

Enter first number, “X :” key, second number, “+ =” key

Division

Enter first number, “X :” key, second number,  red “- =” key       


Calculator Info
P1000257s.jpg P1000227s.jpg P1000228s.jpg P1000229s.jpg
P1000231s.jpg P1000230s.jpg P1000233s.jpg

Click to view a full size picture (opens in a new tab)

Assets: adverts, brochures, etc

Serial number:

Build in:

Functions:

Power:

Market-introduction:

Production until:

Price:


016690X

1970 (see serial nr. info on  http://www.oldcalculatormuseum.com/t-sharpsn)

Addition, Subtraction, Multiplication,  Division

4 built-in NiCd cells

1970 (The QT8D, being externaly powered was introduced in 1969)

1971?

Ca. DM. 2250,- in 1970  (Source: Büromaschinen Lexikon)