Power Supply


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Power supply in a computer

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Power Supply

  1. 1. WHAT ISPROCESSER?Processor which is also called the central processing unit(CPU)interprets and carries out the basic instructions that operatea computer..
  2. 2. • The operating system views each processor as a separate processor. multi-core processor ɷ it is a processor with a single chip with two or more separate processor cores.
  3. 3. THE COMMON MULTI-CORE PROCESSOR ARE DUAL- CORE AND QUAD-CORE.• A dual-core processor is a chip that contains TWO separate processor cores.• A quad-core processor is a chip with FOUR separate processor cores.
  4. 4. When a user starts a program, for example its instruction transferfrom a storage device to memory. Data needed by programs entersmemory from either an input device or a storage device.The controlunit interprets in memory and ALU performs calculation the data inmemory. Resulting information is stored in memory for future access... INPUT DEVICES ↓ data MEMORY ↓ information OUT DEVICES
  5. 5. • Processors contain a control unit and an arithematic logic unit (ALU).• These two components work together to perform processing operations.
  6. 6. THE CONTROL UNIT• Is the component of the processor that directs and coordinates most of the operations in the computer.• It interprets each instruction issued by a program and then initiates the appropriate action to carry out instruction.
  7. 7. • There are a few types of internal components that control units direct such as: a) arithematic logic unit b) registers c) buses
  8. 8. Parallel processing• is a method that uses multiple processors simultaneously to execute a single program or task• it divides a single problem into portion so that multiple processor work on their assigned portion of the problem at the same time.
  9. 9. • These are the few examples of a processor:
  10. 10. MEMORY• It consists of electronic components that store instructions waiting to be executed by the processor.• The role of memory is to store both data and programs which is known as the stored programs concept.
  11. 11. • Memory stores three basic categories items: a) the operating system and other system software that controls or maintain the computer and its devices. b) application programs that carry out a specific task such as word processing c) the data being proccesed by the application programs and resulting information.
  12. 12. Bytes and Addressable Memory• A byte (character) is the basic storage unit in memory.• The data are transferred to memory from storage devices where the instructions and data exsist as bytes.• Each byte resides temporarily in a location in memory that has a address.
  13. 13. Types Of Memory• There are two types of memory: a) volatile b) non-volatile
  14. 14. • When the computers power is turned off volatile memory loses its contents.• Non-volatile, by contrast, does not loses its contents when the power is removed from the computer.• Thus, volatile memory is temporary and non- volatile memory is permenant.• RAM is the most common type of volatile memory.
  15. 15. • Examples of non-volatile include ROM, flash memory, and CMOS.• These are the few examples of memory: