PhotoconductorphotoconductorIn other words, these substances must be good insulators in the dark, and immediately become good conductors after being exposed to light. Light guide materials are divided...

Introduction The power indicator is a kind of indicator light. The number of times the power indicator flashes continuously represents the indoor unit fault code. Power supply indicator: Each hot-swa...

Controller type Usually two types of controllers are used: IDE and SCSI. IDE is the abbreviation of IntegratedDriveElectronics (Integrated Drive Electronics), and SCSI is SmallComputerSystemsInterfac...

Synonymous graphics accelerator card generally refers to graphics accelerator Development status The early version of the video display adapter relied on the CPU to process image information, and th...

In addition, there is also a trackball mouse. The basic structure is the same as that of a normal mouse. The difference is that the ball is on it, and the ball seat is fixed when you work.

Introduction Laser head:It moves from the center to the outside in the Table-of-Contents area, and finds the disc by emitting a laser At the designated position on the upper side, the inductive resi...

ISDN modem, a machine that provides modulated data and demodulated data for ISDN (Integrated Services Digital Network)ISDN modem converts digital signals into analog signals through modulation at the...

The source of the word The English of networm: nethead and "networm" mean the same thing, it means "net fanatic, netizen"; and netizen can be used to refer to all netizens, especially Internet users,...

Internally, they are connected to Fibre Channel or SCSI tape drives. Therefore, the interface controller can manage shared network access and provide most of the required reliability and security.

Introduction The Mini-DVI interface is used on Apple’s computers. It is a digital alternative to the Mini-VGA interface. Its size is between the normal DVI interface and the Micro-DVI interface. It...

Introduction Frame Check SequenceThe judgment process is as follows: the sending network card uses a polynomial calculation, called cyclic redundancy check (CRC), and writes the calculation result I...

A physical recording block on the hard disk needs three parameters to locate: cylinder number, sector number, head number. Hard disk capacity = number of cylinders × number of heads × number of sector...

The same algorithm for the ring redundancy code is checked.If there is an error, it needs to be retransmitted. 2. Examples of cyclic redundancy code generation and code word correctness verification....

V.90 is a 56Kbps data transmission standard formulated by the ITU (International Telecommunication Union). Through the use of compression schemes such as V.42bis, the modem can operate at a rate of 56...

Concept Synchronous control is in contrast to asynchronous control. The content of a synchronously controlled led display is the same as that of the display that controls the computer when publishin...