It is easy to set the working mode of the chip through the software, and when using 8255A to connect external devices, usually no additional external circuits are required, simple and efficient.
Intel 8255A, a classic programmable parallel input/output (I/O) interface chip, reveals the charm of parallel interface with its unique design. This chip consists of four key parts: Data bus buffer: as the core of data transmission, ensuring high speedSmooth flow of data.
is a microcomputer parallel interface chip. The 8255 is a programmable I/O port expansion chip. Input different instructions to the 8255 can change the way the I/O interface works. The connection between 8255 and MCU system is simple, and the working mode is set by the program. Figure 2 is the pin diagram of 8255. The biggest difference between
and 8255A is that 8255A fixes some bugs of 8255, which bugs are not officially announced; The 8255 is a programmable parallel I/O interface chip produced by Intel Corporation with three 8-bit parallel I/O ports.A programmable parallel interface chip (40 pins) with 3 channels and 3 modes of operation.
The four addresses ofare: Base site, base site, base site 2, and base site 3. The 8255 is a parallel interface chip commonly used for computer hardware expansion. It has three 8-bit parallel I/O ports, as well as a control register. In order to access these functions, the 8255 needs to assign four separate I/O addresses.
is a programmable parallel I/O interface chip produced by Intel Corporation, with three 8-bit parallel I/O ports. Programmable with 3 channels and 3 modes of operationParallel interface chip (40 pins). The function of each port can be selected by the software, and the use is flexible and the versatility is strong.
1, Mu Xi IC focuses on the design of fully independent intellectual property rights, for heterogeneous computing and other applications of high-performance general purpose GPU chips.
2, the products of Unigroup Zhanrui include mobile communication central processor, baseband chip, AI chip, RF front-end chip, RF chip and other kinds of communication, computing and control chips, widely used in intelligentMobile phones, smart tablets, smart watches and other consumer electronics and smart finance, smart logistics, smart power, smart medical and other industries.
3. The faucet is JingJiawei. According to the research report of the domestic GPU market, Jingjiawei is the domestic GPU leader, and its JM9 series graphics processing chip performance is similar to Nvidia GeForceGTX1050.
4. Hangjin Technology: The company is an important participant in the GPU chip field, and its stock price and trading volume have attracted market attention. Its GPU chip business occupies a certain share in the market and continues to invest in research and development.3, in the interface chip, the hardware unit is not fixed, can be selected by the user in use, that is, through the computer instructions to select different channels and different circuit functions, called programming control, the configuration of the interface circuit (that is, the circuit working state) can be controlled by the computer instructions of the interface chip called programmable interface chip.
4, called FPGA, with the MCU is not a thing. Logic devices can be classified into two main categories - fixed logic devices and programmable logic devices. As the name suggests, the circuits in a fixed logic device are permanent, and they perform one or a set of functions- Once manufactured, it cannot be changed.
5, SOPC English full name: system-on-a-programmable -Chip, can program the System on a chip with Programmable logic technology to put the entire system on a silicon chip, called SOPC.
1, programmable logic is PLC. programmable logic device English full name: programmable logic device is PLD. PLD is produced as a general integrated circuit, and its logic function is determined according to the user's device programming. The integration degree of general PLD is high enough to meet the needs of designing general digital systems.
2, called FPGA, with the MCU is not a thing. Logic devices can be classified into two main categories - fixed logic devices and programmable logic devices. True to its name, the circuit in a fixed logic device is permanentThey perform one or a set of functions - once manufactured, they cannot be changed.
3. Second, the programming of the two is different. Single-chip programming requires assembly language or C language, the difficulty will be relatively large. The system program is solidified in PLC, and only needs to use the corresponding programming language, which is simple and easy to learn, so the programming is relatively simple.
1, your current 0.1 amp is what current? Should be the total current of this circuit, the program will not burnBad pin, at most can not drive its peripheral circuit, the program is to be debugged, no one is able to succeed, so slowly debug good, will not be bad, but burn too much chip will be bad, depending on the specific information of the chip.
2, will lead to too much current, will burn electrical appliances, the voltage is too high will exceed the voltage of electrical components, breakdown components, resulting in damage to components. The current is too large, exceeding the carrying capacity of the appliance, and it will also burn the appliance and components. Any electrical appliances need to be used in accordance with the requirements of the manual, not over voltage and over current.
3, the current is not big. butYeah, I can't find the reset button. Where is it? In addition, the resistance of the diode end of the photocoupling is a little small, according to a value, the conduction current is approximately 10mA, too large, the conduction current takes 2 ~ 3mA, and the resistance is changed to 5K or 2K.
4, certainly have an impact, will affect the service life, the current is too large will burn components, in addition, the disk, storage, etc. will have an impact, the voltage is too low will not identify the U disk what, it is best to use the original, want to quickly change the new computer, do not care.
osu! Is a very popular rhythm game, where osu pc refers to the osu client operating system for Windows. osu pc offers a smoother gaming experience, and it has a wider audience in the community.
pc is the meaning of playing computer network between men and women to play pc generally refers to playing computer together, online to play pc games or other activities; It is also possible to accidentally reverse the two letters pc, if cp, which refers to the meaning of a pair between men and women.
pc is short for pieceStyle. 1pc is the meaning of one, one etc. pcs is short for pieces. pieces is the plural form of piece. PCS is an English abbreviation of a unit, which is widely used in import and export product business units.