INPUT AND OUTPUT

   Input and output  Introduction      In this blog I will discuss on input/output procedures&devices .External device are not generally connected directly int the bus structure of the computer.I/O module is an interface for the external devices (peripherals) to CPU and memory. Input device • Mouse • ScanKeyboardner • CD-Rom • Game Controller   Output...

Read More

The Processor

Introduction - A processor is the logic circuitry that responds to and processes the basic instructions that drive a computer. The four primary functions of a processor are fetch, decode, execute and writeback. The basic elements of a Processor:  The arithmetic logic unit (ALU), which carries out arithmetic and logic operations on the operands in instructions.   The floating point unit (FPU), also known as...

Read More

Memory Organization

Introduction -A memory or a data byte, or a word, or a double word, or a quad word may be accessed from or at all addressable locations with a similar process would be used to access from all locations and there is would be equal access time for a read or for a write that is independent of a memory address location. This mode differentiates from another model called serial access mode. i ) Memory Hierarchy Figure 1 : Pyramid Table  -...

Read More

Parallel Procesing

Introduction to Parallel Processing  - In computers, parallel processing is the processing of program instructions by dividing them among multiple processors with the objective of running a program in less time.  - In the earliest computers, only one program ran at a time. A computation-intensive program that took one hour to run and a tape copying program that took one hour to run would take a total of two hours to run. - An early...

Read More