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.…
I believe most people are familiar with calculators, and they are more common in daily life. Basically, any store will have one. In addition, the current mobile phone will basically have the function of calculator. This fully illustrates people’s demand for calculators in daily life. So, what are the advantages of calculators that make people…
A calculator is a sophisticated electronic device. The internal components are fragile, and a little carelessness can cause damage. Therefore, you must be familiar with the performance of the machine, pay attention to the impact of environmental conditions, and pay attention to correct use and maintenance. As long as we follow the following precautions, we…
Nowadays, calculators are familiar products in people’s lives. Because calculators are light and durable, and have accurate calculation speed, they are widely used in production and work by widely-developed people, and they are not used in the process of using calculators. You need to have many specialized skills, you can still operate and run, so…
