What is computer memory made of?

In computers, memory is also called main memory. It is a storage space that can be directly addressed by the CPU. It is made of semiconductor devices and mainly consists of memory banks, control circuits, address registers, data registers and address decoding circuits. Composed of five parts.

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

A very important part of the computer structure is memory. It is a component used to store programs and data.

For computers, only with memory can they have memory function and ensure normal operation.

There are many types of memory. According to its purpose, it can be divided into main memory and auxiliary memory. Main memory is also called internal memory (referred to as memory, and Hong Kong and Taiwan call it memory).

Memory, also known as main memory, is a storage space that can be directly addressed by the CPU. It generally uses semiconductor memory. Compared with auxiliary memory, it has the characteristics of small capacity, fast read and write speed, and high price.

The main memory (memory) in the computer is mainly composed of five parts: memory bank, control circuit, address register, data register and address decoding circuit.

Technical indicators

Storage capacity, the total number of storage units that can be accommodated in one memory, the size of the storage space, the number of words, the number of bytes

Access Time, the time elapsed from startup to completion of a memory operation. Main memory speed unit ns

Storage cycle, the minimum time required to start two consecutive operations. Main memory speed unit ns

Memory bandwidth is the amount of information accessed by the memory per unit time. It is an important technical indicator to measure the data transmission rate. The unit is b/s (bits/second) or B/S (bytes/second).

The storage unit that stores a machine word is usually called a word storage unit, and the corresponding unit address is called a word address. The unit that stores one byte is called a byte storage unit, and the corresponding address is called a byte address. If the smallest addressable unit in a computer is a word memory unit, the computer is called a word-addressable computer. If the smallest single addressable bit in a computer is a byte, the computer is called a byte-addressable computer. A machine word can contain several bytes, so a storage unit can also contain several byte addresses that can be addressed individually. For example, in the PDP-11 series computers, a 16-bit binary word storage unit can store two bytes and can be addressed by word address or byte address. When addressing with byte addresses, the 16-bit storage unit occupies two byte addresses

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