Popular computer foundation FAQs

Common problems of computer foundation

1 What is BIOS

the full name of BIOS is "basic input output system". It is the key to start the functions of computer components. It is an integrated circuit block (IC) embedded in the motherboard. The function of BIOS is to provide the basic running program of the computer. Once the computer is turned on, the basic program in BIOS is loaded first, and then the operating system is executed. Therefore, if there is no BIOS, the computer cannot start

2.286, 386, 486 and so on

early CPUs were called by numbers, such as 286, 386, and 486 computers, which meant that the CPUs used by computers were 286, 386, and 486 CPUs. But after 486, Intel no longer calls it this way. The so-called 586 CPU is called "Pentium", that is, Pentium, such as Pentium II and Pentium III

4. What's the difference between M and ram

rom and RAM are two types of computer memory. ROM refers to read-only memory, that is, it can only read information, not write information. After the computer is powered off, the information in it is still saved, and it is generally used to store fixed system software and word library. Ram refers to read-write memory, which can be read or written by any storage unit. After the computer is powered off, the information in it will not be saved, and it needs to be reloaded when it is powered on again. It is usually used to store the operating system, all kinds of running software, input and output data, intermediate results and information exchanged with external memory. The memory we often say mainly refers to ram

4. What are the computer buses

(1) definition of bus bus bus is the channel for information transmission between computer devices. It consists of data bus, address bus and control bus

data bus is a data channel for data transmission between external devices and bus master devices. The width of the data bus, that is, the number of bits of the data bus, represents the computing power and scale of the computer system

the address bus is the channel for transmitting address information between external devices and bus master devices. Address bus bits, which determine the addressing ability of the system and indicate the scale of the computer system

the control bus is a channel dedicated to the transmission of various control signals, and all functions of bus operation are completed by the control bus. Control bus signal, which represents the characteristics of the bus and represents the design idea and control skills of the bus

(2) structurally, it can be divided into:

isa industrial standard structure

bus of EISA enhanced industrial standard structure

local bus proposed by VESA Video Electronics Industry Association, VL bus for short

pci peripheral component interconnection bus

so you can rest assured that you can use our company's product

agp accelerated graphics interface

the following table shows the bandwidth and transmission rate bus types of some general-purpose i/o buses currently in use

screen width-333)this. width=screen. width-333 "Border=0>

it can be seen from the above figure that agpx4 bus has wide band width and large capacity, so it is currently the mainstream bus for graphic display. Due to some limitations of AGP bus, generally there is only one AGP bus as the interface bus of display card on computers. PCI bus is widely used as another relatively fast bus, and generally on computers 1. There are two to four slots of this type to make the processing run longer. Isa slots Due to the limitation of its bandwidth and capacity, it has been gradually eliminated, but in order to maintain the compatibility of computers, some computers usually retain one or two slots of this type

5 What is plug and play

plug and play is "plug and play". After the computer has installed the hardware, the driver of the hardware itself must be installed before it can be used. But for many people, it is not easy to install drivers, so in the windows 95 operating system, the "plug and play" function is used to solve this problem. The plug and play method is that many commonly used hardware drivers are built in the windows 95 operating system. After you install the hardware, if there is a driver for this hardware in Windows 95, the system will automatically install it. If not, you must install another driver yourself. Windows 98 provides more hardware drivers than Windows 95. At present, most of the hardware can be "plug and play", but exceptions may also occur