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…
An electronic calculator is a combination of many parts that work together. Since the development of large-scale integrated circuits, it has become possible to manufacture some functional components on a microprocessor chip (LSI). This chip is the core that realizes various operations and control The core component (CPU), plus a pre-stored program component composed of…
With the development of the country’s economy and technology, the use of calculators in daily life has also spread widely. In the field of mathematics, there are a lot of more complicated calculation test questions. If you use the previous oral calculation, abacus calculation, written calculation, etc., it can no longer meet the requirements of…
The conversion between the standard display format and the scientific display format sometimes requires the operation result a of the standard display format to be changed into the scientific display format. There are different methods; one is to press the EE two key, which means a, 10 two. In this way, it should be noted…
The scientific calculator has been mentioned in our junior high school textbooks, which shows the important role of the use of scientific calculators. In our lives, scientific calculators are a very important life tool and play an important role. Scientific calculators What are the methods and units of use? We have already learned about the…
The calculator power supply voltage conversion circuit triode BG and the oscillating transformer B, etc. form a typical transformer-reporting oscillating circuit. Transformer B has a total of six windings, of which the 1, 10 and 7.8 end windings are the base and collector windings of BG respectively, that is, the two basic windings that make…
