* A computer is an electonic
device that perform a variety of tasks according to the given instructions.
* A computer works as a data processor that processes data to form information.
* Data are raw facts that may not convey meaning.
* Information is meaningful data.
* A computer undergoes input-process-output cycle.
* Input unit carries out the input phase, CPU(Centeral Processing Unit) carries out the process phase and output unit carries out the output phase.
* The CPU consists of two components: Control Unit(CU) and Arithmetic Logic Unit(ALU). The CPU controls and supervises the task and ALU performs the arithmetic and logic operations.
* The main memory holds the data and instrutions as well as intermediate outputs during processing, After the task is performed, the output is sent to output unit and the memory is cleared.
* The unit of memory is byte. A byte consists os 8 bits and a nibble consists of4 bits. One Kilobyte(KB) is equal to 1024 bytes. One Megabyte(MB) is equal to 1024 KB. One Gigabytes is equal to 1024 MB. One Terabyte(TB) is equal to 1024 GB.
* A computer works as a data processor that processes data to form information.
* Data are raw facts that may not convey meaning.
* Information is meaningful data.
* A computer undergoes input-process-output cycle.
* Input unit carries out the input phase, CPU(Centeral Processing Unit) carries out the process phase and output unit carries out the output phase.
* The CPU consists of two components: Control Unit(CU) and Arithmetic Logic Unit(ALU). The CPU controls and supervises the task and ALU performs the arithmetic and logic operations.
* The main memory holds the data and instrutions as well as intermediate outputs during processing, After the task is performed, the output is sent to output unit and the memory is cleared.
* The unit of memory is byte. A byte consists os 8 bits and a nibble consists of4 bits. One Kilobyte(KB) is equal to 1024 bytes. One Megabyte(MB) is equal to 1024 KB. One Gigabytes is equal to 1024 MB. One Terabyte(TB) is equal to 1024 GB.
