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Program status word or PSW
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoProgram Status pg 367 operating systems
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IBM Mainframes dominated IT Industry until 1980s Why IBM lost that dominate position?
IBM is still the leader in Mainframes..
What software does Indian railways use?
IBM Mainframes
External devices are attached to traditional IBM mainframes through?
Channels
What is the size of a mainframe?
The first mainframes were large enough to fill an entire room. The mainframes today created by IBM are about the size of your household refrigerator.
Before personal computers and the internet were invented what mainframes dominated the IT marketplace?
IBM's pg. 366 operating systems
Where is micro computers used?
There are mainframe computers, mini computers and micro computers. Mainframes are large scale computers, (search IBM System/360) mini computer are smaller, a lot smaller than mainframes (search IBM AS/300) and minis are what's on your desktop like a DELL, HP, Sony, etc.
What is an example of an operating system that uses a command line interface?
DOSUnix and all its varientsC/PMMVS and OS series for IBM mainframes
What is the maximum length of an instruction for the 8086 based IBM PC?
4
Traditional IBM mainframes recognize different interrupt types?
Yes, from first versions of the IBM 360 architecture there are different interrupt types that put the system into Supervisor mode and invoke the operating system to analyze the interrupt type
Who invented the spell checker?
The first spelling verification program was written for IBM mainframes in the late 1970's. The original was designed by a team of linguists from Georgetown University.
The family of a computers idea was introduced in the 1960's with the IBM system360 mainframes is this idea now dead as a doornail or does it live on?
OS/390, OS/400 are still alive and they rock!
'A' is represented in the binary system as?
Most computers use ASCII (or some similar) encoding, in which 'A' is represented as 65, or 01000001 binary. Older IBM mainframes use an entirely different encoding.
