Classification of digital computer system

-


Classification of     digital computer ->

Digital computer has been classified into two types:

1- Purposes-wise 
2- Size-wise 

Purposes-wise 

 1- special purpose : used to perform specific task. The program or institutions set in permanently stored in such a machine, which perform a single task quickly and effectively can be used for separate purposes like weather forecasting etc.
2- Genaral purpose : used for different purposes. Numerous appreciation are loaded to different purposes that can be used for office Automation, Research, Entertainment, Commercially purposes, Education etc. 

Size-wise

1- micro Computer : Lot of changes has taken place in microprocessor architecture in these days. The introduction of multimedia, 3D animation, editing, gaming etc,  technology into a a processor for entertainment media is very popular now days. The present range of CPU included -.  Intel xeon E5205, Intel i7-975 Extreme Edition Bloomfleld, AMD Athlon II 240 Regor, Intel Core 2 duo T9400 etc.

Mini computer : These are multi-user system. It allows 50 to 100 users to work at a time. The mini computer offered the advantage of a mainframe computer at lower costs. Some Mini Computer named as   IBM's AS/400e, Honeywell200,  TI-990.

Mainframe computer : These are multi-user system. They are generally used in a centralized computer center. 
Different departments will be having different terminals and there are connected to the mainframe computer. Mainframe computers provide in large storage capacity and faster CPU Speed. It is not based on single chip processor. Several math and logic processor are used. It's speed is measured in nanoseconds. A maximum of users can work at a time. A few of application area's where these computers are mostly used, for engineering designs and online application with large database.
For example : IBM z15.
IBM z14.
IBM System z13.
IBM z Enterprise System.
IBM System z10.
IBM System z9 etc.
 
Super computer : These are basically designed for complex scientific application processing needs. The processing speed of this computer is very high compared to mini and micro. The speed is measured in quadrillion second (10¹⁵ part of a second). It is a multi user system and 1000 times faster than a regular computer
For example : Fugaku. Fugaku was jointly developed by RIKEN and Fujitsu. 
Sierra. 
Sunway TaihuLight
HPC5.
Marconi-100.
Summit.
Piz Daint.
Frontera.

Popular posts from this blog

Siemens Ozoniser how Siemens Ozoniser work

-
Image
Siemens Ozoniser:  This Ozoniser consist of two co-axial glass tubes fused together at one end. The outer side of the outer glass tube and the inner side of the inner glass tube are finally coated with tin foils as shown in the figure given below.  (Siemens Ozoniser)->2                                                     (Siemens Ozoniser)->1 These tin foil are connected  to the induction coil for supply of silent electric discharge. Pure and dry oxygen gas is passed into the apparatus through annular space. The gas is then subjected to the action of silent electric discharge where oxygen gets converted into ozone. The ozonised oxygen then comes out  of the apparatus through the outlet of the Ozoniser. (Siemens Ozoniser)->2
Read more

Rutile structure

-
Rutile structure: The radius radio is in the range 0.73 to 0.41. in rutile (TiO²) each Ti⁴+ ion is octahedrally surrounded by six O²- ions whereas each other O²- ion is surrounded by only three Ti⁴+ ions arranged at the tree corners of a plane triangle. The Co-ordination number of Ti⁴+ and O²+ ions are 6 and 3, respectively. It is not exactly a close packed structure. Ti⁴+ ions in rutile may however, be considered as forming a sufficiently distorted body centred cubic lattice.           Example  compounds  having radius ratio below 0.41 are SiO² and BeF² but these are only a few. The Co-ordination number of Si⁴+ and Be²+ is four and that of O²- is two. However, these are appreciably co-valent.
Read more

F - block element What are f - block elements

-
What are F - Block Elements - F - block elements are consist of Lanthanides and Actinides. In Lanthanides, they are 14 element immediately following Lanthanum (57) from cerium (58) to lutecium (71) . These 14 element are called Lanthanides . These Lanthanides belong to first inner transition series .           In Actinides , these are also 14 elements immediately following Actinium (89) starting from Thorium (90) to lawrencium (103) . The element from Th (90) to Lr (103) are called Actinides . They belong to second inner transition series.
Read more