What is prom in microcomputer storage system

Prom in the microcomputer storage system refers to programmable read-only memory, which is a read-only memory that can be operated by a program; its main feature is that it only allows data to be written once. If the data is entered incorrectly, it can only be written once. scrapped. This memory is used to permanently store programs.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

PROM (Programmable Read-Only Memory) - Programmable Read-Only Memory, also called One-Time Programmable (OTP)ROM "One-Time Programmable Read-Only Memory", is a programmable read-only memory. of read-only memory. The most important feature is that data is only allowed to be written once. If the data is entered incorrectly, it can only be scrapped

1. Programmable read-only memory (English: Programmable read-only memory), abbreviated as PROM or FPROM, is a A kind of computer storage memory chip, each bit has data content determined by the state of fuse or antifuse. This memory is used to permanently store programs.

2. It is often used in various electronic products that pre-store fixed data or programs, such as electronic game consoles and electronic dictionaries. The difference between PROM and narrow ROM (Mask ROM) is that the former can write data as needed after the IC is manufactured, while the data of the latter needs to be created in the IC when the IC is manufactured.

3. Burn in the program. Each bit of a typical PROM will be 1 at the beginning. If the fuse of the bit is blown during programming, it will become 0. This process is irreversible ( That is, it cannot be changed after burning), and the memory will not disappear after power failure, so this kind of memory is a kind of read-only memory. If it is disconnected after burning, it is called a fuse. If it is connected after burning, it is called an antifuse.

4. Invention process The earliest PROM was invented in 1956 by Zhou Wenjun, who worked at the American Bosch Arma Corporation in Gatton City, New York. This invention was proposed by the U.S. Air Force to improve the flexibility and security of Air Force computers and Atlas E/F band missiles.

5. Including memory and hard disk. Memory is the storage space required by the computer to run instructions. The hard disk is responsible for storing system data, application software and personal data.

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