BACHELOR OF BUSINESS ADMINISTRATION

Detailed explanation-1: -This unit is also called storage unit. The data and instructions, which are entered through an input unit must be stored on the computer before the actual processing starts. The result produces by the computer after processing is also kept somewhere before passed to the output units.

Detailed explanation-2: -Memory holds the data after it is input to the system and before it is processed; also, memory holds the data after it has been processed but before it has been released to the output device. In addition, memory holds the programs (computer instructions) needed by the central processing unit.

Detailed explanation-3: -In memory unit data is stored before being actually processed. The data so stored is accessed and processed according to a set of instructions which are also stored in the memory of the computer well before such data is transmitted to the memory from input devices.

Detailed explanation-4: -Central Processing Unit (CPU) The CPU is the brain of a computer, containing all the circuitry needed to process input, store data, and output results. The CPU is constantly following instructions of computer programs that tell it which data to process and how to process it.

Detailed explanation-5: -System unit (or processing devices): Two important parts are CPU and memory. Input / Output devices: It includes input devices which helps in entering data into the computer and output device that display output to the user. Storage devices: Stores data permanently for future use. For example, Hard disk.