1. Understand the basic composition of the computer.
Generally, computers we see are composed of three parts: host (main part), output device (monitor) and input device (keyboard and mouse). The host is
The computer body includes: motherboard, CPU, memory, power supply, graphics card, sound card, network card, hard disk, floppy drive, CD-ROM drive and other hardware.
Basically, a computer can be divided into five parts: arithmetic unit, memory, controller, input device and output device.
2. Understand the computer system
The computer system is divided into two parts: hardware and software. Hardware is equivalent to human body, and software is equivalent to human soul.
Hardware is generally divided into host and external devices. The host is the core component of the computer, usually placed in the chassis. While external devices include input devices (such as keyboards,
Mouse) and output devices such as monitors and printers.
Software is generally divided into system software and application software.
3. What basic parts do you need to buy to assemble a computer?
(1), the chassis, and the main parts of general computers are all here.
(2) The monitor is used to see the working process of the computer, otherwise, you don't even know what the computer is doing.
(3) Keyboard and mouse, input useful commands to the computer to make it work for us.
(4), motherboard, this is a very important thing, although it looks a bit "ugly", here is one of the important parts that determine the performance of your computer.
(5), memory, when the computer is working, the computer will store the stored data here, which is equivalent to human memory.
(6) CPU, also known as central processing unit, is the core of computer operation and control.
(7), graphics card, the computer sends it to the monitor through this thing.
(8), sound card, the computer through this thing to sound the speaker.
(9), hard disk, usually people often say that my hard disk has how many G, which is the capacity of this hard disk. The more G, the more things you can hold.
(10), floppy drive, that is, something that inserts a floppy disk. Now it is generally 3.5 inches, compared with 5.25 inches in ancient times. Now we'll buy it, but they won't sell it.
(1 1), optical drive, of course, this is essential for listening to CDs. Sometimes some software you want to install is on CD, so this is very useful.
(12), power supply, which is mainly used to convert 220V external power supply into various DC power supplies for all parts of the computer.
4. How to evaluate the quality of a computer?
Of course, the quality of a computer should be measured from many aspects, not just one or several performance indicators. And generally evaluate the quality of a computer.
The indicators of achievement are as follows:
(1), CPU type and clock frequency
This is the most important performance index of a computer, which determines the most basic performance of a computer. We used to say 286, 386, 486, 586, 686 and so on.
According to the model of CPU.
Clock frequency is a measure of the computer working at a fixed beat, also known as the main frequency. The higher the clock frequency, the shorter the clock cycle, and it executes instructions.
The shorter the time required, the faster the operation speed.
(2) Memory capacity
The unit of memory is MB. At ordinary times, people always say how many MB I have in memory, that's what I mean, such as 32MB, 64MB, 128MB, 256MB and so on. A computer,
The larger its storage capacity, the more complex and faster the tasks that the computer can handle.
(3) Configuration of external equipment
High-end computers generally have soft monitors, keyboards, mice, speakers and so on.
(4), running speed
The running speed of a computer is mainly determined by the speed of CPU and memory.
(5), bus type
The more bus bits, the higher the machine performance.
(6) Compatibility
Whether it has wide compatibility, including whether it can run all kinds of application software developed on all computers and whether it can accept all kinds of expansion cards of computers.
Basic knowledge of computer hardware (1)
1. Understand the basic composition of the computer.
Generally, computers we see are composed of three parts: host (main part), output device (monitor) and input device (keyboard and mouse). The host is
The computer body includes: motherboard, CPU, memory, power supply, graphics card, sound card, network card, hard disk, floppy drive, CD-ROM drive and other hardware.
Basically, a computer can be divided into five parts: arithmetic unit, memory, controller, input device and output device.
2. Understand the computer system
The computer system is divided into two parts: hardware and software. Hardware is equivalent to human body, and software is equivalent to human soul.
Hardware is generally divided into host and external devices. The host is the core component of the computer, usually placed in the chassis. While external devices include input devices (such as keyboards,
Mouse) and output devices such as monitors and printers.
Software is generally divided into system software and application software.
3. What basic parts do you need to buy to assemble a computer?
(1), the chassis, and the main parts of general computers are all here.
(2) The monitor is used to see the working process of the computer, otherwise, you don't even know what the computer is doing.
(3) Keyboard and mouse, input useful commands to the computer to make it work for us.
(4), motherboard, this is a very important thing, although it looks a bit "ugly", here is one of the important parts that determine the performance of your computer.
(5), memory, when the computer is working, the computer will store the stored data here, which is equivalent to human memory.
(6) CPU, also known as central processing unit, is the core of computer operation and control.
(7), graphics card, the computer sends it to the monitor through this thing.
(8), sound card, the computer through this thing to sound the speaker.
(9), hard disk, usually people often say that my hard disk has how many G, which is the capacity of this hard disk. The more G, the more things you can hold.
(10), floppy drive, that is, something that inserts a floppy disk. Now it is generally 3.5 inches, compared with 5.25 inches in ancient times. Now we'll buy it, but they won't sell it.
(1 1), optical drive, of course, this is essential for listening to CDs. Sometimes some software you want to install is on CD, so this is very useful.
(12), power supply, which is mainly used to convert 220V external power supply into various DC power supplies for all parts of the computer.
4. How to evaluate the quality of a computer?
Of course, the quality of a computer should be measured from many aspects, not just one or several performance indicators. And generally evaluate the quality of a computer.
The indicators of achievement are as follows:
(1), CPU type and clock frequency
This is the most important performance index of a computer, which determines the most basic performance of a computer. We used to say 286, 386, 486, 586, 686 and so on.
According to the model of CPU.
Clock frequency is a measure of the computer working at a fixed beat, also known as the main frequency. The higher the clock frequency, the shorter the clock cycle, and it executes instructions.
The shorter the time required, the faster the operation speed.
(2) Memory capacity
The unit of memory is MB. At ordinary times, people always say how many MB I have in memory, that's what I mean, such as 32MB, 64MB, 128MB, 256MB and so on. A computer,
The larger its storage capacity, the more complex and faster the tasks that the computer can handle.
(3) Configuration of external equipment
High-end computers generally have soft monitors, keyboards, mice, speakers and so on.
(4), running speed
The running speed of a computer is mainly determined by the speed of CPU and memory.
(5), bus type
The more bus bits, the higher the machine performance.
(6) Compatibility
Whether it has wide compatibility, including whether it can run all kinds of application software developed on all computers and whether it can accept all kinds of expansion cards of computers.