Computer Basics
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Computer Basics
A computer is a multipurpose device that accepts input, processes data, stores data, and produces output, all according to a series of stored instructions
Ankur Chaddha
1
Computer Basics Computer input is whatever is typed, submitted, or transmitted to a computer system Output is the result produced by a computer Data refers to the symbols that represent facts, objects, and ideas Computers manipulate data in many ways, and this manipulation is called processing
◦ Central Processing Unit (CPU) ◦ Microprocessor
Ankur Chaddha
2
Computer Basics Memory is an area of a computer that temporarily holds data waiting to be processed, stored, or output Storage is the area where data can be left on a permanent basis when it is not immediately needed for processing A file is a named collection of data that exists on a storage medium The series of instructions that tells a computer how to carry out processing tasks is referred to as a computer program
.
3
Components of a Computer System ◦ The hardware components of a computer system are the electronic and mechanical parts. It is actually the physical equipments of a computer system ◦ The software components of a computer system are the intangible (non-physical) parts: the data and the computer programs . It is actually a program or set of instructions that controls the operation of a computer.
Categorisation of softwares Application softwares (or "applications") are programs that tells computer how to accomplish a specific task System softwares keep all the hardware and software running Applications System softwares softwares
n n n n n
Word processors Spreadsheets Database software Graphics programs
n
Operating system. Network operating system.
An overview picture
HARDWARE
A computer is a multipurpose device that accepts input, processes data, stores data, and produces output, all according to a series of stored instructions
Ankur Chaddha
1
Computer Basics Computer input is whatever is typed, submitted, or transmitted to a computer system Output is the result produced by a computer Data refers to the symbols that represent facts, objects, and ideas Computers manipulate data in many ways, and this manipulation is called processing
◦ Central Processing Unit (CPU) ◦ Microprocessor
Ankur Chaddha
2
Computer Basics Memory is an area of a computer that temporarily holds data waiting to be processed, stored, or output Storage is the area where data can be left on a permanent basis when it is not immediately needed for processing A file is a named collection of data that exists on a storage medium The series of instructions that tells a computer how to carry out processing tasks is referred to as a computer program
.
3
Components of a Computer System ◦ The hardware components of a computer system are the electronic and mechanical parts. It is actually the physical equipments of a computer system ◦ The software components of a computer system are the intangible (non-physical) parts: the data and the computer programs . It is actually a program or set of instructions that controls the operation of a computer.
Categorisation of softwares Application softwares (or "applications") are programs that tells computer how to accomplish a specific task System softwares keep all the hardware and software running Applications System softwares softwares
n n n n n
Word processors Spreadsheets Database software Graphics programs
n
Operating system. Network operating system.
An overview picture
HARDWARE
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