3.Computer hardware And Software

3.Computer hardware And Software

Hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.

Examples of Hardware are the following −

  • Input devices− keyboard, mouse, etc.
  • Output devices− printer, monitor, etc.
  • Secondary storage devices− Hard disk, CD, DVD, etc.
  • Internal components− CPU, motherboard, RAM, etc.

Input Devices– In computing, an input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or information appliance

 

Keyboard

Mouse

Joy Stick

Light pen

Track Ball

Scanner

Graphic Tablet

Microphone

Magnetic Ink Card Reader(MICR)

Optical Character Reader(OCR)

Bar Code Reader

Optical Mark Reader(OMR)

 

Types of keys on keyboard

 

Function Keys  

Cursor Control KEY    

Esc Key    

 Control Key   

 Shift Key    

 Enter Key

Tab Key  

 Insert Key    

 Delete Key  

 ScrollLock Key     

NumLock Key     

CapsLock Key    

  PrtScr Key

 

Pointing device

 

Mouse

Trackball

Light Pen

Joystick

Touchpad/ Trackpad

Pointing Stick

Graphics Tablet

Touch screen

 

 

 

Types of output devices

The following list contains many different output devices. For further information, select any of the listings with blue text.

 

3D Printer               Braille embosser                       Braille reader                  Flat panel

GPS                       Headphones                               Monitor                          Plotter

Projector                Sound card                                Speakers                         Video card

TV                          COM (Computer Output Microfilm)

Printer (dot matrix printerinkjet printer, and laser printer).

SGD (Speech-generating device)

 

Computer Software

 

Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem.

There are two types of software −

1.System Software        2.Application Software

System Software

The system software is a collection of programs designed to operate, control, and extend the processing capabilities of the computer itself. System software is generally prepared by the computer manufacturers. These software products comprise of programs written in low-level languages, which interact with the hardware at a very basic level. System software serves as the interface between the hardware and the end users.

Some examples of system software are Operating System, Compilers, Interpreter, Assemblers, etc.

Here is a list of some of the most prominent features of a system software −

  • Close to the system
  • Fast in speed
  • Difficult to design
  • Difficult to understand
  • Less interactive
  • Smaller in size
  • Difficult to manipulate
  • Generally written in low-level language

Application Software

Application software products are designed to satisfy a particular need of a particular environment. All software applications prepared in the computer lab can come under the category of Application software.

Application software may consist of a single program, such as Microsoft’s notepad for writing and editing a simple text. It may also consist of a collection of programs, often called a software package, which work together to accomplish a task, such as a spreadsheet package.

Examples of Application software are the following −

  • Payroll Software
  • Student Record Software
  • Inventory Management Software
  • Income Tax Software
  • Railways Reservation Software
  • Microsoft Office Suite Software
  • Microsoft Word
  • Microsoft Excel
  • Microsoft PowerPoint

Features of application software are as follows −

  • Close to the user
  • Easy to design
  • More interactive
  • Slow in speed
  • Generally written in high-level language
  • Easy to understand
  • Easy to manipulate and use
  • Bigger in size and requires large storage space

 

 

3.Computer hardware And Software

Hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.

Examples of Hardware are the following −

  • Input devices− keyboard, mouse, etc.
  • Output devices− printer, monitor, etc.
  • Secondary storage devices− Hard disk, CD, DVD, etc.
  • Internal components− CPU, motherboard, RAM, etc.

Input Devices– In computing, an input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or information appliance

 

Keyboard

Mouse

Joy Stick

Light pen

Track Ball

Scanner

Graphic Tablet

Microphone

Magnetic Ink Card Reader(MICR)

Optical Character Reader(OCR)

Bar Code Reader

Optical Mark Reader(OMR)

 

Types of keys on keyboard

 

Function Keys  

Cursor Control KEY    

Esc Key    

 Control Key   

 Shift Key    

 Enter Key

Tab Key  

 Insert Key    

 Delete Key  

 ScrollLock Key     

NumLock Key     

CapsLock Key    

  PrtScr Key

 

Pointing device

 

Mouse

Trackball

Light Pen

Joystick

Touchpad/ Trackpad

Pointing Stick

Graphics Tablet

Touch screen

 

 


 

Types of output devices

The following list contains many different output devices. For further information, select any of the listings with blue text.

 

3D Printer               Braille embosser                       Braille reader                  Flat panel

GPS                       Headphones                               Monitor                          Plotter

Projector                Sound card                                Speakers                         Video card

TV                          COM (Computer Output Microfilm)

Printer (dot matrix printerinkjet printer, and laser printer).

SGD (Speech-generating device)

 

Computer Software

 

Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem.

There are two types of software −

1.System Software        2.Application Software

System Software

The system software is a collection of programs designed to operate, control, and extend the processing capabilities of the computer itself. System software is generally prepared by the computer manufacturers. These software products comprise of programs written in low-level languages, which interact with the hardware at a very basic level. System software serves as the interface between the hardware and the end users.

Some examples of system software are Operating System, Compilers, Interpreter, Assemblers, etc.

Here is a list of some of the most prominent features of a system software −

  • Close to the system
  • Fast in speed
  • Difficult to design
  • Difficult to understand
  • Less interactive
  • Smaller in size
  • Difficult to manipulate
  • Generally written in low-level language

Application Software

Application software products are designed to satisfy a particular need of a particular environment. All software applications prepared in the computer lab can come under the category of Application software.

Application software may consist of a single program, such as Microsoft’s notepad for writing and editing a simple text. It may also consist of a collection of programs, often called a software package, which work together to accomplish a task, such as a spreadsheet package.

Examples of Application software are the following −

  • Payroll Software
  • Student Record Software
  • Inventory Management Software
  • Income Tax Software
  • Railways Reservation Software
  • Microsoft Office Suite Software
  • Microsoft Word
  • Microsoft Excel
  • Microsoft PowerPoint

Features of application software are as follows −

  • Close to the user
  • Easy to design
  • More interactive
  • Slow in speed
  • Generally written in high-level language
  • Easy to understand
  • Easy to manipulate and use
  • Bigger in size and requires large storage space

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



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