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c4c:typesofcomputer [01/06/2012 11:43]
andrew [Minicomputers]
c4c:typesofcomputer [10/10/2013 14:21] (current)
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 The largest computers were originally called mainframes, they could process lots of data but required teams of highly skilled engineers to keep them running. The first Mainframes used valves internally, these were replaced with transistors and eventually, Integrated Circuits or as they are more commonly called, Silicon Chips. The largest computers were originally called mainframes, they could process lots of data but required teams of highly skilled engineers to keep them running. The first Mainframes used valves internally, these were replaced with transistors and eventually, Integrated Circuits or as they are more commonly called, Silicon Chips.
  
-The early machines used [[http://​en.wikipedia.org/​wiki/​Punched_card#​IBM_80_column_punched_card_formats_and_character_codes|punched cards]] to store information,​ but this made reprogramming the computer difficult and becasue ​punched cared are mechanical, the speed of processing was limited to how fast the cards could be read. [[http://​en.wikipedia.org/​wiki/​Paper_tape|Paper tape]] replaced punched cards and was much faster to read, but still limited the speed of processing. [[http://​en.wikipedia.org/​wiki/​Magnetic_tape_data_storage|Magnetic tape]] was faster still but the real boost to the speed data could be processed at was the invention of [[http://​en.wikipedia.org/​wiki/​Disk_storage|magnetic disks]].+The early machines used [[http://​en.wikipedia.org/​wiki/​Punched_card#​IBM_80_column_punched_card_formats_and_character_codes|punched cards]] to store information,​ but this made reprogramming the computer difficult and because ​punched cared are mechanical, the speed of processing was limited to how fast the cards could be read. [[http://​en.wikipedia.org/​wiki/​Paper_tape|Paper tape]] replaced punched cards and was much faster to read, but still limited the speed of processing. [[http://​en.wikipedia.org/​wiki/​Magnetic_tape_data_storage|Magnetic tape]] was faster still but the real boost to the speed data could be processed at was the invention of [[http://​en.wikipedia.org/​wiki/​Disk_storage|magnetic disks]].
  
 The first mainframe computers like the one in the left hand picture ran one program at a time in sequence (also called batch processing because the programs were submitted one at a time in batches), current mainframe'​s similar to the IBM one in the right hand picture actually run many "​Virtual"​ computers in one chassis, each of these computers can run many programs at a time. The first mainframe computers like the one in the left hand picture ran one program at a time in sequence (also called batch processing because the programs were submitted one at a time in batches), current mainframe'​s similar to the IBM one in the right hand picture actually run many "​Virtual"​ computers in one chassis, each of these computers can run many programs at a time.

c4c/typesofcomputer.txt ยท Last modified: 10/10/2013 14:21 (external edit)