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Advance Electronics Mini Executive

The Advance Electronics Mini Executive is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 17 keys and an LED (light-emitting diode) display, typical of calculators of this era. The calculator was manufactured in UK.

The float/fixed point and constant (K) switches required a press-and-twist action, a bit like a bayonet light bulb fitting, and were quite fiddly. The buttons themselves had a distinct clickiness, but with only a limited travel. Apart from the sliding on-off switch being a bit temperamental the calculator was well-made and had a futuristic brushed aluminium fascia.

Personal note: This was the first pocket calculator I ever used. My father bought it for his office. It was a choice between the Advance Executive and one of the Hewlett-Packard models which seemed very expensive. I seem to remember there were really no other options, this being before the boom in pocket calculators that was to occur a couple of years later.

It was amazing to be able to do arithmetic calculations so effortlessly, and at no cost, and with such a compact device. You could do as many calculations as you liked, and quickly, unlike the electro-mechanical adding machines that used to consume paper rolls. It was quite expensive to run off batteries so it was almost permanently attached to its mains-powered cradle.

I saw this machine two or three decades later when visiting my father's office and it was still working.​

Facts at a glance:

Type Arithmetic
Functions 4
Keys 17
Precision 8
Logic Algebraic
Display type LED
Display size
Length 152 mm
Width 53 mm
Thickness unknown mm
Weight unknown g
Power Source
Country UK
Original price $100.00
Est. current value $50.00
Year introduced 1972
Year discontinued 1973

See other calculators manufactured by Advance Electronics.