Major Function of Input and Output Devices

Major Function of Input and Output Devices Points : major function of input and output devices Major Function of Input Device
  • These are physical equipments that read or translate data consisting of alphabets, number or other symbols into electronic impulses, which can be understood by the computer.
  • The purpose of input devices is to pass information into the memory unit of the CPU.

Functional Units of Computer

Functional Units of Computer Points : functional units of computer, input unit, central processing unit (cpu), function of a cpu:, output unit, hard copy and soft copy Functional Units of Computer A micro computer consists of several components, each containing mechanical and electronic equipments. There are three basic components of a computer.
i. Input unit
ii. Central Processing Unit
iii. Output Unit

Difference Between Internal And External Memory

Difference Between Internal And External Memory Points : difference between internal and external memory, comparision between internal and external memory
Difference Between Internal And External Memory
Internal Memory
External Memory
1.Internal memory is also known as primary storage or main memory.External memory is also known as secondary, Auxiliary or backing storage.
2.It is volatile in nature in case of RAM but ROM is non-volatile.It is non-volatile in nature.
3.It is connected by inserting chips into sockets in case of RAM while ROM is built in into the computer.They are connected by data cable and power cable with the computer.

Difference between Serial ports and Parallel ports

Difference between Serial ports and Parallel ports Points : difference between serial ports and parallel ports, define ports. compare and contrast: serial ports and parallel ports Ports A ports is a socket at the back of a computer used to plug-in various devices. Personal computers have various types of ports. Internally; there are several ports for connecting disk drives, display controllers and keyboards. Externally, personal computers hive ports for connecting modems, printers, scanner and other peripheral devices.
Difference between Serial ports and Parallel ports
Serial ports
Parallel ports
1.A direct link with micro computer’s bus that facilitates the serial transmission of data.A direct link with microcomputer’s but facilitates the parallel transmission of data.

Purpose of Data Bus, Address Bus and Control Bus

Purpose of Data Bus, Address Bus and Control Bus Points : purpose of data bus, address bus and control bus, define the term bus in general. what are the purpose of data bus, address bus and control bus Buses A processor communicates with Input/output circuit and memory by using signals. These signals travel along a set of wires or connections called bus that connect the different components together. There are three types of signals: address, control and data; like wise there are three types of buses: Address bus, Control bus and Data bus.

There are local buses that connect elements within the CPU and buses, which connect the computer to external memory and peripherals. The bus width determine the speed of data transmission.

Major Functions of Arithmetic Logical Unit and Control Unit

Major Functions of Arithmetic Logical Unit and Control Unit Points : major functions of arithmetic logical unit and control unit, define the terms with their major functions, arithmetic logical unit, control unit Arithmetic Logical Unit This is where arithmetic operations such as addition, subtraction, division and multiplication are performed. This is where logical operations are also done such as comparison between two pieces of data. The ALU performs the basic functions on data received from the primary storage based on instruction from the control unit.

Differentiate between source and object program

Differentiate between source and object program Points : differentiate between source and object program
Differentiate between Source and Object program
Source Program
Object Program
1.The main program or set of instruction in some high level language.The program which is being converted into machine code.
2.Before translation form.After transfer form.
3.Source program cannot be executed but interpreted or compiled into an object program.Object program can be linked and executed after translation by linker.