Mainframe & Networked Computers

Mainframe Computers

These types of computers are large, fast and expensive. They are used by large organizations  such as banks. It connects hundreds and thousands of users. These users connect via terminals which are located in different cities or even abroad.

Modern mainframe design is generally less defined by single-task computational speed (typically defined as MIPS  rate or FLOPS in the case of floating point calculations), and more by:

  • Redundant internal engineering resulting in high reliability and security
  • Extensive input-output facilities with the ability to offload to separate engines
  • Strict backward compatibility with older software
  • High hardware and computational utilization rates through virtualization to support massive throughput

Their high stability and reliability enables these machines to run uninterrupted for decades.

5

Networked Computers

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  • Personal computers connected to a server via network cards and cables.
  • The software and data is stored on the central server rather than installed individually on each PC.
  • The network also enables a fast Internet connection, printers and scanners to be shared.
  • Users access allocated resources via a user name and password.
  • Very popular with small-to-medium-sized businesses, schools and colleges/adult education centers.
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