What is Sinclair calculator?
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 Scientific Programmable, released a year later, was advertised as the first budget programmable calculator.
When did the Sinclair calculator come out?
September 1972
Introduced in 1972, there were at least two different versions of the Sinclair Executive, with different keyboard markings, and another called the Sinclair Executive Memory, introduced in 1973….Sinclair Executive.
| Introduced | September 1972 |
| Invented by | Clive Sinclair |
| Cost | GB£79.95 |
| Calculator | |
|---|---|
| Display type | Light-emitting diode |
What was the first pocket calculator?
Pocket-sized devices became available in the 1970s, especially after the Intel 4004, the first microprocessor, was developed by Intel for the Japanese calculator company Busicom….Internal workings.
| Unit | Function |
|---|---|
| Binary decoder unit | Converts binary code into decimal numbers which can be displayed on the display unit. |
How is Sinclair calculated?
The Sinclair Total is calculated by taking an athlete’s total (combined max snatch and clean & jerk) and multiplying that number by the Sinclair Coefficient.
How does a Sinclair chart work?
The idea is that it adjusts a person’s performance using their bodyweight and the coefficient. The number that is gotten by using the Sinclair Formula is what the lifter would total, theoretically, if they were at the highest weight class, assuming the same level of ability. This is called the Sinclair Total.
How is Sinclair total calculated?
How do you put infinity in a calculator?
To specify positive infinity, input 1E99. To specify negative infinity, input -1E99. The “E” symbol is short for scientific notation and can be accessed by pressing [2nd] [EE]. -1E99 can be interpreted as “negative one times 10 to the ninety-ninth power”.
What is Sinclair score?
Sinclair Scores The score is obtained by multiplying the lifter’s Snatch and Clean & Jerk total by a coefficent which is based on body weight. The total lifts of the gold medal winners in every weight class at each Olympic Games are used to determine the formula that will be used for calculating Sinclair coefficients.
How is Sinclair coefficient calculated?
The sinclair coefficient is recalculated in the end of each olympic year. It’s based on the total world records in each bodyweight category….The Sinclair Coefficient.
| A | a calculated coefficient |
|---|---|
| x | the lifters bodyweight |
How much did the Texas Instruments SR 10 calculator originally cost?
Priced at $150 in 1972, the SR-10 was the first handheld calculator capable of computing square roots and other basic slide-rule functions — and it had a red LED display.
What’s the difference between a Sinclair Cambridge and scientific calculator?
It shares the same external design as the earlier Sinclair Cambridge, a more humble arithmetic calculator, but where the Cambridge’s plastic is black, on the Scientific it is white. The LED display sits behind a purple-tinted window, and the blue-and-black keyboard occupies the lower two-thirds of the front panel.
What was the original price of a Sinclair Cambridge?
When first introduced in summer 1973 the Cambridge cost £43.95 Sterling [about US$100]. In Summer 1977 the mail-order discount price had dropped to £8.95 Sterling [about $US15], one fifth of the original price. © Text & photographs copyright Nigel Tout 2000-2019 except where noted otherwise.
Who is the manufacturer of the Sinclair calculator?
Nearly all of the calculators were produced by Sinclair Radionics Ltd., though the Wristwatch calculator was produced by Sinclair Instruments Ltd.
How much does a Sinclair Sinclair case cost?
Cost £43.95 GBP in Britain, and in the U.S.A. in January 1974 it cost US$79.95 as a build-it-yourself kit and US$99.95 fully assembled [1]. The case has a glossy finish, with a poorer quality moulding than usual for Sinclair. The main chip is in a more expensive ceramic package.