computer year 11 summary
UNIT 1-T : STRUCTURE AND FUNCTIONS OF A COMPUTER
1T.1 : MAJOR FUNCTIONS AND PARTS
A computer is an electronic device operating under the controls of instructions stored in its own memory unit that can accept data (input), process data arithmetically and logically produce output for processing and store result for future use.
A computer is a device, which can perform computation, including arithmetic and logic operations, without intervention by a human being. A computer system consist not only of the device which can perform computations without human intervention but also devices which allows data to be made available for processing and devices on which data can be displayed or printed for use by human beings.
1. List the three main components of a computer system. 1. Input 2. Processor 3. Output
2. Describe the functions of the three main components of a computer system. (i) Input - involves accepting data in machine-readable form and sending it to the Central Processing
Unit (CPU) for processing.
(ii) Processor - The central processing unit - controls and manipulates data to produce information. A microcomputer's CPU is contained on a single integrated circuit or microcomputer chip. These chips are called microprocessor. Microprocessor - It carries out the processing task by interpreting and executing the instruction in a program.
(iii) Output - The output function involves the presenting of data externally, passing data for further processing, or sending data for storage.
3. List the three components of the central processing unit.
a. Arithmetic Logic Unit (ALU) b. Control Unit c. Memory
4. Briefly describe the functions of the following three components of the central processing unit: a. Memory - used to store program being run on the computer and data on which the program works. b. Control Unit - takes one program instruction at a time and acts upon it. The actions results in the flow
1T.1 : MAJOR FUNCTIONS AND PARTS
A computer is an electronic device operating under the controls of instructions stored in its own memory unit that can accept data (input), process data arithmetically and logically produce output for processing and store result for future use.
A computer is a device, which can perform computation, including arithmetic and logic operations, without intervention by a human being. A computer system consist not only of the device which can perform computations without human intervention but also devices which allows data to be made available for processing and devices on which data can be displayed or printed for use by human beings.
1. List the three main components of a computer system. 1. Input 2. Processor 3. Output
2. Describe the functions of the three main components of a computer system. (i) Input - involves accepting data in machine-readable form and sending it to the Central Processing
Unit (CPU) for processing.
(ii) Processor - The central processing unit - controls and manipulates data to produce information. A microcomputer's CPU is contained on a single integrated circuit or microcomputer chip. These chips are called microprocessor. Microprocessor - It carries out the processing task by interpreting and executing the instruction in a program.
(iii) Output - The output function involves the presenting of data externally, passing data for further processing, or sending data for storage.
3. List the three components of the central processing unit.
a. Arithmetic Logic Unit (ALU) b. Control Unit c. Memory
4. Briefly describe the functions of the following three components of the central processing unit: a. Memory - used to store program being run on the computer and data on which the program works. b. Control Unit - takes one program instruction at a time and acts upon it. The actions results in the flow