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Calculator Research: Prinztronic Brochure - Prinztronic C40

Source:

Part of a Dixons' brochure from 1972.  Dixons is a UK electrical retail chain that had its own Prinztronic electronic goods brand in the 1970s.

Links: This model can be seen on page Prinztronic C40.
Text:

For only £45 - A sophisticated desk top calculator designed to 
save you time, effort and the risk of inaccuracy.

The Prinztronic C40 is a beautiful, streamlined calculator.  But don't be put off by its low price.  At only £45 it is inexpensive enough to issue one to all of your staff.  Yet it's sophisticated enough to save you, your staff, your company: time, effort, and the risk of inaccuracy.  The perfect perfect big brain for small businesses.  Consider these astonishing features.

Decimal point with floating input, settable output
4-function (adds, subtracts, multiplies, divides), 8 digit calculations
Constant multiplications and divisor facility
3-position decimal point settings
AC mains operation
Automatic overflow warning with negative light to show minus results (e.g. 35-45=-10).
Full chain calculation (e.g. 1972x16÷25=1262.08).
Beautiful streamline design.
Full zero suppression
Complete with dust cover

Prinztronic C40 Only £45 or £5 down
and 18 payments (Total 51.44) of £2.58 monthly.

Comment: Rare 1972 Dixons brochure that covers not only this calculator but the Prinztronic Micro, the Prinztronic MC65 and the Prinztronic MC95.  To our modern ears the description extols rather basic abilities - like being able to add and subtract and cope with chain calculations.  Probably the best strap-line is "risk of inaccuracy" as early non-scientific calculators all worked out the correct answers this is not a USP.  Why you would want to know what 1972 times 16 divided by 25 was - I'm not sure, but the use of the year for the first number got me going.  For one minute I thought - ah, if I was 16 in 1972...  Notice the use of the blue computer-font for the model number - very Space 1999.