Classification of Computer

							The classification of computer
Many different types of computers, and many classification methods. Some of the
points system is used in the professional, for example, we use the I stands for
"order flow", with the D stands for "data
flow", with the S that the "single", with M, said
"many." So the system can be divided into: SISD, SIMD, MISD,
MIMD total of four.
According to the evolution of computer classification and recent trends may be,
abroad usually divided into 6 categories computer:
  (1) super computer, or supercomputer supercomputer is usually the largest, fastest,
most expensive computer. For example, the world's fastest super machine
speed of 170.4 billion floating-point operations per second. Production supercomputer
company Cray Inc. has the United States, TMC Corporation, Japan, Fujitsu, Hitachi
and others. China has also developed the Galaxy machines are supercomputer, Galaxy
1 million times for the machine, Galaxy 2 billion times for the machine.
  (2) machine, or a small super small super small machine known as your desktop
supercomputer supercomputer, it would like to shrink into a supercomputer the size of
individual machines, or make personal machine with supercomputer performance.
Typical products are the United States Convex's C-1, C-2, C-3, etc.;
Alliant's FX series.
  (3) large host which includes what we usually large, medium-sized computer. This is
before the advent of the microprocessor, the most important mode of calculation, that
is mainframe computing center on the glass room, the user must go to the
machine's side on the work of ICC. Experienced mainframe batch phase,
time-processing stage, into the distributed processing and centralized management of
the stage. IBM has been in the mainframe market dominance, DEC, Fujitsu, Hitachi,
NEC also makes the mainframe. But with the rapid development of computer and
network, mainframes are declining. Computing great many of our high quality
machines are being replaced by computer group.
  (4) minicomputer as the mainframe is expensive, complicated to operate, only large
enterprises could afford larger units. In the integrated circuit driven by a series of 60s
DEC minicomputers, such as the PDP-11 series, VAX-11 series. HP has 1000,3000
series. Minicomputer for the department usually calculated. Similarly, it has also been
the challenge of high-end computer.
  (5) high-end computer workstations and workstation line between not very clear,
high-performance workstations and minicomputers are close to or even close to the
low-end host. However, the workstation, after all, has its distinctive feature: Use the
large screen, high-resolution display; a large-capacity internal and external memory,
and most of networking capabilities. Their use is also rather special, for example,
computer-aided design, image processing, software engineering and large control
center.
  (6) personal computer, or microprocessor, which is currently the fastest growing
areas. According to its microprocessor chips used in different divided into several
types: first is to use the Intel Pentium chip, 386,486, and other IBM PC and
compatibles; followed by the use of IPM - Apple-Motorola PowerPC chips jointly
developed by machines, Apple's Macintosh machines have been using this
chip; again, DEC launched the Alpha chip to use its own machines.