The display of the pocket calculator is divided into three types: light-emitting diode, fluorescent digital tube and low-power LCD. The position of the display can be divided into eight, ten, twelve, and ten PR positions. However, the general pocket electronic calculators that use eight or ten positions are widely used, and there are more imported…
A long time ago, we calculated simple addition and subtraction operations through calculations. Multiplication and division operations can only calculate small numbers. Once the numbers become larger, they cannot be calculated accurately. However, the invention of the abacus is already a major advancement in human civilization. With the development of technology, calculators are now the…
The functional calculator can also be called a scientific calculator, which is the general term for the type of calculator with elementary function numerical calculation function, and it is also the most commonly used type of calculator. It can have different calculation functions due to factors such as the manufacturer and model of the production.…
Calculators using fluorescent digital tube display power consumption are relatively large, usually use No. 5 manganese-zinc dry battery as the power source, and the continuous service life is generally about 10 hours. When the battery voltage is too low, not only will the digital tube glow dimly, but also calculation errors will occur, the digital…
The arithmetic unit is the main component of the electronic calculator, and all digital calculations are performed by the arithmetic unit. The arithmetic unit is composed of two registers and a computing device. How the register stores numbers, and how the computing device performs digital calculations, we can explain from its structure. The register is…
When a calculator fails and needs to be repaired, the first problem encountered is how to open the back cover of the calculator. The back cover is usually fixed with screws and bayonet, but most calculators have both. However, the screws to fix the back cover of the calculator are generally cross-shaped. When opening the…
The development of electronic-mechanical computers also occupies a very important link in the development of digital computing. Due to the invention of punched cards, electronic-mechanical electrical appliances, and sequential machine theory, the Aiken machine electrical calculator was successfully designed in 1944. However, the important development of digital computing was still after the Second World War,…
Calculator online calculation can be divided into standard calculation and scientific calculation. What are standard and technological online computing? What are the differences between them? Let’s take a look at the relevant content about calculator online computing. With the development of technology now, the use of calculators is indispensable in daily life, and it is…
It was found that the electrodes of the liquid display sheet and the conductive ring on the rubber conductive rod, and the printed circuit board were in contact and misaligned, so the displayed numbers were irregular. Maintenance method: carefully adjust the position of the LCD screen. As shown in the figure, the two ends of…
The calculators we use today are the most indispensable computing devices in people’s lives and work, because calculators are not only small in size and easy to carry, and fully efficient mathematical operations can be said to be of great benefit to people’s lives, although The calculator may seem trivial but has an unshakable status.…
