Basic knowledge of computer hardware (1)
1. Understand the basic components of a computer
Generally, the computers we see are composed of: host (main part) It consists of three major parts: output device (monitor) and input device (keyboard and mouse). The host is the main body of the computer. In the host box there are: motherboard, CPU, memory, power supply, graphics card, sound card, network card, hard disk, floppy drive, optical drive and other hardware.
Basically speaking, computers can be divided into five major 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 the human body, while software is equivalent to the human soul.
Hardware is generally divided into host and external devices. The host is the core component of a computer and is usually placed in a chassis. External devices include input devices (such as keyboard,
mouse) and output devices (such as monitors, printers), etc.
Software is generally divided into system software and application software.
3. What basic components need to be purchased to assemble a computer?
(1) Chassis, the main parts of the general computer are placed here.
(2) The monitor is used to watch the working process of the computer. Otherwise, you will not know what the computer is doing.
(3) Keyboard and mouse, enter useful commands into the computer and let it work for us.
(4) Motherboard, this is a very important thing. Although it looks a bit "ugly", it is one of the important parts that determines the performance of your computer.
(5) Memory, when the computer is working, the computer will store data here, which is equivalent to human memory.
(6) CPU, also known as central processing unit, is the core of computer computing and control.
(7) Graphics card, the computer transmits it to the monitor through this thing.
(8) Sound card, the computer transmits sound to the speakers through this thing.
(9) Hard drive. People often say how many Gs my hard drive has, which refers to the capacity of the hard drive. The more Gs, the more things can be installed.
(10) Floppy drive is a thing that inserts a floppy disk. Nowadays, 3.5-inch drives are generally used. In ancient times, 5.25-inch drives were used. Nowadays, no one sells them when we buy them.
(11) Optical drive, of course it is indispensable for listening to CDs. Sometimes you need to install certain software on the CD, so this is very useful.
(12) Power supply, mainly used to convert 220V external power supply into various DC power supplies for use by various components of the computer
4. How to evaluate the quality of a computer Of course, the quality of a computer must be measured from many aspects, and we cannot just look at one or a few performance indicators. Generally, the performance indicators used to evaluate the quality of a computer are as follows:
(1) CPU type and clock frequency
This is The most important performance indicator of a computer, it determines the most basic performance of a computer. In the past, the 286, 386, 486, 586, 686, etc. we often talked about were called according to the model of the CPU.
Clock frequency is a measure of how a computer works at a fixed beat. It is also called the main frequency. The higher the clock frequency, the shorter the clock cycle. It executes instructions
The shorter the time required, the faster the operation speed.
(2) Memory capacity
The unit of memory is MB. Usually people always refer to this when they say how many MB my memory has, such as 32MB, 64MB, 128MB, 256MB Wait, a computer,
the larger its memory capacity, the more complex the tasks the computer can handle, and the faster it will be.
(3) Configuration of external devices
High-end computers generally have soft monitors, keyboards, mice, speakers, etc.
(4) Running speed
The running speed of a computer is mainly determined by the speed of the CPU and memory.
(5) Bus type
The more bus bits there are, the higher the machine performance.
(6) Compatibility
Whether it has broad compatibility, including whether it can run various application software developed on all computers and accept various computer expansion cards
Basic knowledge of computer hardware (1)
1. Understand the basic components of a computer
Generally, the computers we see are composed of: host (main part), output device It consists of three major parts (monitor) and input device (keyboard and mouse). The host is the main body of the computer. In the host box there are: motherboard, CPU, memory, power supply, graphics card, sound card, network card, hard disk, floppy drive, optical drive and other hardware.
Basically speaking, computers can be divided into five major 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 the human body, while software is equivalent to the human soul.
Hardware is generally divided into host and external devices. The host is the core component of a computer and is usually placed in a chassis. External devices include input devices (such as keyboard,
mouse) and output devices (such as monitors, printers), etc.
Software is generally divided into system software and application software.
3. What basic components need to be purchased to assemble a computer?
(1) Chassis. Generally, the main parts of a computer are placed here.
(2) The monitor is used to watch the working process of the computer. Otherwise, you will not know what the computer is doing.
(3) Keyboard and mouse, enter useful commands into the computer and let it work for us.
(4) Motherboard, this is a very important thing. Although it looks a bit "ugly", it is one of the important parts that determines the performance of your computer.
(5) Memory, when the computer is working, the computer will store data here, which is equivalent to human memory.
(6) CPU, also known as central processing unit, is the core of computer computing and control.
(7) Graphics card, the computer transmits it to the monitor through this thing.
(8) Sound card, the computer transmits sound to the speakers through this thing.
(9) Hard drive. People often say how many Gs my hard drive has, which refers to the capacity of the hard drive. The more Gs, the more things can be installed.
(10) Floppy drive is a thing that inserts a floppy disk. Nowadays, 3.5-inch drives are generally used. In ancient times, 5.25-inch drives were used. Nowadays, no one sells them when we buy them.
(11) Optical drive, of course it is indispensable for listening to CDs. Sometimes you need to install certain software on the CD, so this is very useful.
(12) Power supply, mainly used to convert 220V external power supply into various DC power supplies for use by various components of the computer
4. How to evaluate the quality of a computer Of course, the quality of a computer must be measured from many aspects, and we cannot just look at one or a few performance indicators. Generally, the performance indicators used to evaluate the quality of a computer are as follows:
(1) CPU type and clock frequency
This is The most important performance indicator of a computer, it determines the most basic performance of a computer. In the past, the 286, 386, 486, 586, 686, etc. we often talked about were called according to the model of the CPU.
Clock frequency is a measure of how a computer works at a fixed beat, also called the main frequency. The higher the clock frequency, the shorter the clock cycle, which executes instructions
The shorter the time required, the faster the calculation speed.
(2) Memory capacity
The unit of memory is MB. Usually people always refer to this when they say how many MB my memory has, such as 32MB, 64MB, 128MB, 256MB Wait, a computer,
the larger its memory capacity, the more complex the tasks the computer can handle, and the faster it will be.
(3) Configuration of external devices
High-end computers generally have soft monitors, keyboards, mice, speakers, etc.
(4) Running speed
The running speed of a computer is mainly determined by the speed of the CPU and memory.
(5) Bus type
The more bus bits there are, the higher the machine performance.
(6) Compatibility
Whether it has broad compatibility, including whether it can run various application software developed on all computers and accept various computer expansion cards