Hand-held electronic calculators store. The Sinclair Cambridge Programmable Calculator was also sold in the US as the Radio Shack EC-4001.
Sinclair Cambridge Pocket Calculators Sinclair Old Computers
Its a simple four-function calculator with an LED numeric display and a somewhat dodgy reputation.
Sinclair programmable calculator. Programmable Calculators Hewlett Packard Texas Instruments Casio Sinclair has 606 members. The range ultimately comprised seven models the original four-function Cambridge which carried out the four basic mathematical functions of addition subtraction multiplication and. However in 1973 Sinclair introduced a range of calculators starting with the Cambridge.
This is not true since there were earlier calculators that would fit in a small pocket for example the Busicom LE-120A handy. Sinclair Oxford 100 LED calculator. Sinclair spectrum computer discs working before being storage stored cupboard.
The Sinclair Cambridge Programmable Calculator was also sold in the US as the Radio Shack EC-4001. It has 51 functions 19 keys and an LED light-emitting diode display typical of calculators of this era. It is definitely the smallest programmable calculator Ive ever seen.
Integrated circuits - National Semiconductor MM5799EHYN and DS7784N Requires a 9v PP3 battery - a pregnant mode because of the bulge on the back. The Sinclair Scientific Programmable released a year later was advertised as the first budget programmable calculator. Sinclair Cambridge Programmable Built-in scientific functions are highly inaccurate some yielding only 4 significant digits Okay so perhaps the Cambridge Programmable is not the smallest programmable calculator in the world.
SINCLAIR SPECTRUM 3 128K COMPUTER with rare sinclair cambridge programmable calculator white with original black case. Sinclair Instrument Wrist Calculator. This fascinating and very early programmable calculator came with a huge set of four manuals containing programs to solve various mathematical.
It had an 8 digits red LED display made by National Semiconductor. Sinclairs official four-volume set of program books for the Sinclair Cambridge Programmable Calculator. Sinclair Scientific Programmable Calculator.
The first Sinclair Executive calculators used one of the standard calculator chips of the time the Texas Instruments TMS1802. Sinclair Cambridge Programmable. The power source is PP3 9V.
Sometimes i played games on it like manic miner or jet pack willy. For example DR sin gives 07069515 instead But there is worse. Sinclair maths This calculator like previous Sinclair Scientifics has appalling trig functions.
Sinclair Sovereign Calculator never used boxed instructions etc. Sinclair Scientific Programmable Calculator With Instructions And Program. The last Sinclair programmable calculator and one of the last Sinclair calculators ever made is a surprisingly pleasant machine.
The design evolved rapidly and at the Mark III stage it was sold assembled and as a kit. The first programmable calculators such as the IBM CPC used punched cards or other media for program storage. Programmable calculators are calculators that can automatically carry out a sequence of operations under control of a stored program much like a computer.
This exhibit has a reference ID of CH31902. It has an 8 digits red LED display made by National Semiconductor. The Sinclair Scientific calculator was a 12-function pocket-sized scientific calculator introduced in 1974 dramatically undercutting in price other calculators available at the time.
The Sinclair Cambridge Programmable is a programmable calculator with 8 digits precision and algebraic logic. Please quote this reference ID in any communication with the Centre for Computing History. This normally has a current consumption of about 300 mA which dictates that normal AA size batteries or larger need to be used to give a decent battery life.
Sinclair Clive Sinclair was very innovative in the field of consumer electronics and for many years in Britain was widely known as the man who invented the pocket calculator. 50 mm x 111 mm x 28 mm. The Sinclair Cambridge was a pocket-sized calculator introduced in August 1973 by Sinclair RadionicsIt was available both as kit form kit to be assembled by the purchaser or assembled prior to purchase.
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