There are many erroneous books available in the market to which many faculty/student refer to. For instance, many books give wrong internal architecture of CPU wherein main memory is shown as an integral part of the CPU.
The student learns this wrong concept in the 1st year itself and carries it with him throughout his life.
The correct internal architecture of CPU is given below:
Where ALU: Arithmetic and Logic Unit
CU : Control Unit
Registers: Temporary/ scratch pad memory locations
A. K. Sharma
Thought to ponder:
Do not sow fear in others' hearts; do not inflict pain on others; do not promote anxiety or grief. If you take pleasure in the pain of others, you only scotch the divinity in you.
(Bhagwan Sri Satya Sai Baba)
Posted notes clarify a very fundamental misconception prevailing around. A complete schematic diagram of a computer system along with the correction mentioned in the post would be an added help. Also, If not the main memory, does cpu cache memory sit inside a CPU?
ReplyDeleteRegards,
-Atul
PS : Waiting to your notes on SubTyping (Inheritance)in OOD.
Posted note is appreciable as it clarifies the misconception which unfortunately is given in many books of computer fundamentals and few people give a very serious thought to it as it is a fundamental thing. I think the term CPU was used when there were no PCs and there were mainframe computers. After the invention of PC by IBM in late 70s mainframes were still dominating the computer world so term processor taht should have been used ofr the brain of a microcomputer could not overpower the term CPU used for brain of the mainframe computers leading to the prevailant muddied up definition of CPU.
ReplyDeleteRegards,
Arun
Dear Sir
ReplyDeleteI would like to attract your kind attention ragarding the CPU architecture. The diagram which yourgoodself has shown wrong (crossed)contains memory component (not main memory(as mentioned in the description). Thus request you to re-consider it. If it is memory not main memory and as long as the authors of books, where the figure is provided as correct figure, have view "a collection of registers is memory" they are correct in my view. So if i am wrong or confused, please, correct me.