In a microcomputer, what bus is used to transfer information between the CPU and the internal memory

Microcomputers all have a bus structure.

The position of the system bus in the microcomputer, just like the human nerve center system, the CPU reads and writes the content of the memory through the system bus, and also writes the data in the CPU to the peripherals through the bus, or reads the CPU from the peripherals.

A bus is a set of communication lines used to transmit information. The microcomputer connects the components together through the system bus, and realizes the information exchange between the components within the microcomputer. In general, the signal provided by the CPU needs to pass through the bus to form a circuit to form a system bus. Peculiarity.

Microcomputer.

A microcomputer is a small electronic computer composed of large-scale integrated circuits. It is a bare metal based on a microprocessor, equipped with internal memory, input/output (I0) interface circuits, and corresponding auxiliary circuits.

Microcomputers are characterized by small size, great flexibility, low cost, and easy to use.

The main technical indicators to measure a microcomputer.

1. Word length. Word length is the number of bits of binary data that a computer can process at a time. The larger the word length, the higher the computing accuracy of the computer, the larger the addressing space, and the stronger the processing power of the computer.

2. Main frequency. The clock frequency refers to the clock frequency of the CPU. The main frequency is the main parameter to measure the speed of a microcomputer, the higher the frequency, the shorter the period to execute an instruction, and therefore the faster the speed.

3. Computing speed.

The computing speed is measured in millions of instructions per second (MIPS), which is a more intuitive indicator of the computing speed of a microcomputer than the main frequency.

4. Storage capacity.

Memory capacity reflects the ability of the internal memory to store data, and the larger the storage capacity, the larger the range of data processing and the faster the computing speed.

5. Access cycle.

The shorter the access period, the faster the access speed. The size of the access period affects the speed of the microcomputer. Therefore, the access cycle is an important performance indicator of the microcomputer.

The data transmitted by the CPU through the data bus is called a "word", and a word is usually composed of one or more (usually integer bits of bytes).

**The processor (Central Processing Unit), referred to as CPU, is the computing core and control core of a computer launched in 1971, and is the final execution unit of information processing and program operation. The CPU contains arithmetic logic components, register components, and control components, and has functions such as processing instructions, performing operations, controlling time, and processing data. Since its inception, it has made great progress in logical structure, operational efficiency and functional extension.

Register components, including general-purpose registers, specialized registers, and control registers. General-purpose registers can be divided into two types: fixed-point and floating-point, which are used to store the temporary storage of register operations and intermediate (or final) operation results during instruction execution. General-purpose registers are an important part of the processor, and most instructions need to access them.

The width of the general-purpose register determines the width of the data path inside the computer, and the number of ports can often affect the parallelism of the internal operation.

Computer Word. Note that "computer words" and what we usually call "words" are not the same concept. Computer words are related to the CPU process, which may be 32-bit, 64-bit, (current CPUs are all 64-bit).

And what we usually call the word is the 8 digits.

Word. Word length is a performance indicator of a computer, and word length is the length of data that a computer can process at a time.

When a computer processes data, the data that the CPU accesses, processes, and transmits at once through the data bus is called (word).

Word length, the CPU accesses, processes and transmits binary data at a time, so I think it's word length.

In microcomputers, internal memory is usually used in semiconductor memory.

A complete Shentongwu microcomputer system includes two parts: hardware system and software system. The hardware system consists of combinators, controllers, memory (including memory, external memory and cache), and various input and output devices, which work in a "instruction-driven" mode.

Semiconductor memory is characterized by small size, fast speed, power can be stored, no power empty, that is, the computer can store data in the memory when it is turned on, and all the data in it will be automatically emptied after shutdown.

The technical indicators of semiconductor memory mainly include:

1.Storage capacity: the number of storage cells m and the number of bits per cell n.

3.Access Period: The minimum amount of time between two independent memory operations.

4.Mean Time Between Failures MTBF (Reliability).

5.Power consumption: dynamic power consumption, static power consumption.

The system bus of a microcomputer is a common channel for transferring () information between the CPU and other components.

a.Inputs, outputs, operations.

b.Inputs, outputs, controls.

c.Programs, data, calculations.

d.Data, Address, Control.

Correct answer: d

In a microcomputing system, the components are connected together by bus, and the bus that connects the CPU to the memory, input and output devices, and other interfaces is called the internal bus.

The internal bus is the interconnection of all the building blocks of the processor. The buses used to transfer data inside the CPU, between registers, and between the arithmetic logic components ALU and the control components are called on-chip buses (i.e., buses inside the chip).

Answer]: c In the computer each effective information accompaniment, must have 3 basic attributes: content, pointing and behavior, these 3 belong to the respect to be achieved through 3 buses: data bus, address bus, Lu Na old control bus.

Answer: c

The composition of computer hardware mainly includes motherboard, CPU, memory, graphics card, hard disk, optical drive, sound card, network card, etc., the first three are the necessary hardware of the computer, and the last few items are optional hardware, strictly speaking, monitors, keyboards, mice, etc. do not belong to computer hardware, but belong to computer peripherals. Among them, the CPU is the more cores, the larger the main frequency, the better, and the larger the memory and hard disk, the better.

The graphics card depends on the situation.

This section explains the sixth lesson of computer knowledge popularization and application: the hardware composition of computers.