FC-PGA2

Reading: The f sea tweet Gee a two
Field:
Microprocessor > x86/Intel > Intel > FC-PGA2

At one of package methods of the integrated circuit, Pentium III/Pentium III-S/Celeron (the Pentium III base) the system which is adopted. The heat spreader of the aluminum make which is called IHS in the former FC-PGA package is installed, from has reached the point where it is easy to release heat. In addition, physical damage of the core with the installation mistake and the like of the CPU fan is prevented. The socket form which corresponds FC-PGA similarly Socket370.

FD <Floppy disk>

Alias:
floppy disk
Field:
Storage > removable > FD

One of memory medium. One disk which applied the magnetic substance it consists of the jacket which protects that. Capacity is small, either speed of reading and writing of the data is not fast, but because it is cheap, to be wide it has spread. Size of the disk are 3 types of 3.5 inches, 5 inches and 8 inches, small extent is new. Presently as for 8 inches and 5 inches it is not used. There to be the type of 2DD and 2HD etc depending upon capacity, presently those of the 2HD type of 1.44MB main current. Recently there is also the bulk disk of HiFD and SuperDisk etc which have the floppy disk and compatibility.

FDB <Fluid bearing>

Full spelling: Fluid Dynamic Bearing
Alias:
Fluid dynamical pressure bearing
Field:
Storage > hard disk > FDB

Those which use fluid such as oil and air for the bearing of the axis of rotation of the motor. As for those which use the oil also the “oil bearing” is called.

Usually fills up bearing sphere and lube to the space between the axis of rotation and the bearing of the motor, (this is called “the ball bearing”) with FDB lies between fluid such as oil and air is exercising the place, smoothly only. Long-lived conversion of the motor, noise conversion being possible low with the adoption of FDB, it is adopted for hard disk drive and the waste heat fan etc.

FDC <Floppy disk controller>

Reading: F D sea
Full spelling: Floppy Disk Controller
Field:
Storage > removable > FDC

The integrated circuit in order to control floppy disk drive. It is built in to the computer.

FDD <Frequency division duplex operation>

Reading: F D D
Full spelling: Frequency Division Duplex
Field:
Network technology > connection > FDD

At one of the systems which (duplex communication) actualize simultaneous transmission and reception with such as radio communication, dividing the band of channel into half, the technique which does transmission and reception simultaneously.

If simultaneously bidirectionally it can do the base station of the portable telephone and the communication etc of the terminal, but it is not possible to communicate simultaneously bidirectionally at identical frequency. With FDD the frequency zone which is used is divided for transmission and into one for reception, simultaneous transmission and reception is actualized. Zone is restricted in comparison with when you use to unidirectional.

Vis-a-vis this, dividing one band finely with the time base, changing transmission and reception to high speed, as for the system which does simultaneous transmission and reception TDD (Time Division Duplex: The time division duplex operation) with you say. With standard IMT-2000 of the third generation (3G) portable telephone, as for W-CDMA and CDMA2000 FDD, as for TD-CDMA and TD-SCDMA TDD is used.