• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

What is hardware?

Extracts from this document...


A01b - Using Hardware What is hardware? The physical components of a computer including the keyboard, monitor, disk drive, internal chips and wiring. The purpose of hardware is to help you input data into the computer and to give you information. Hardware consists of input and output devices. An input device is a device that puts data into the computer. For example when you type on a keyboard, you are "inputting" information (text) the computer. An output device is a device that "gives out" information, the most common output device is a monitor. A monitor sends out signals what makes us see all the actions it makes. This diagram is of just some of the inputs and output devices of a computer. Hardware used Keyboard The QWERTY keyboard is the most common way to enter text and numerical data into a computer. It is called a QUERTY keyboard because the first six letters across the top line are Q U E R T Y. Each key is a switch, and when pressed, sends a digital code to the computer. Keyboards come in many shapes and sizes depending on the computer. A keyboard is used for lots of things, buts its main job is entering data into the computer, from written documents. ...read more.


The scanner it more expensive than a keyboard, as the scanner is more advanced in technology. This is one of the reasons why more people have the keyboard, along with the fact that a keyboard is more or less essential to a computer. When you press a key on the keyboard whilst on a word processing program, information is immediately entered and shown onto the monitor. Unlike the keyboard, you have to wait several minutes for the transferring process. The information entered using a keyboard is very clear, and you can change the size and style of the text. On the other hand, when text is inputted using a scanner, the quality can sometimes be very poor, and can rarely be edited. The quality of the inputted information from the scanner can depend highly on the scanner. Overall, I think the scanner is the best and most efficient inputting device. I decided the keyboard was the most appropriate input device for entering text into my website because: * A keyboard is a part of the standard computer and is very important. * When you buy a computer, a keyboard is nearly always included in the package so you don't have to pay an extra cost, whereas you nearly always have to buy a scanner as it is not essential to the computer. ...read more.


* The hard disk cannot be removed from the computer and used in another one, as the disk is fixed inside of the computer. * The hard disk is not as fast at accessing items, than the IAS, because the read-write heads have to move to the right part of the hard disk, and then read the data into IAS. Choice of hardware I decided the most appropriate storage device for saving the website would be the hard drive because: * The hard disk is much more reliable than a floppy a floppy disk as it is much easier to damage a floppy disk than to damage a hard disk. The hard disk is very well protected and the floppy disk is quite small and can be easily broken. * The hard disk has a lot more storage space that a floppy disk, so if the document is too big, the floppy disk might not be able to hold all of the data. * Hard disks are much easier and quicker to access. They rotate at about 60-120 revolutions per second, compared to the floppy disk which only rotates at about 6 revolutions per second. * The hard disk is always in your computer, and is always there to access. The floppy disk can be lost or damaged, so there is a chance you might lose all work. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Computer Science section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Computer Science essays

  1. Control Unit, Memory Unit, and Arithmetic Logic Unit. The CPU or Central Processing ...

    However, if the question had said 'Describe...' or 'Explain...' instead of 'State...', then the question would have been worth 6 marks, and some extra detail, for instance the contents of the brackets, would have been necessary. 2 A. a) -RAM is volatile (will lose its contents when the power is switched off), while ROM is not.

  2. Different ways of data capture

    (This is done later in batch) REAL TIME + PSEUDO REAL TIME PROCESSING Real Time processing occurs when a comp responds automatically to events occurring e.g. computer control of an aeroplane. In data processing of a more mundane nature e.g. selling tomatoes in safeway , a system where the computer records a transaction and more or

  1. With diagrams compare and contrast the relative advantages and disadvantages of digital transmission over ...

    Transmission on optical fiber wire requires repeaters at distance intervals. The glass fiber requires more protection within an outer cable than copper. For these reasons and because the installation of any of the new wiring is labour-intensive, few communities yet have optical fiber wires or cables from the phone company's branch office to local customers (known as local loops).

  2. Smart Card System

    Data Modeling Data modeling has been chosen as one of the techniques for the development of the prototype is because the team needs to build a database that can use to store the students, lab assistant and log file information by using the Microsoft Access and retrieve the data by using the Java programming language.

  1. CP3 - Proposed Solution to a Realistic Problem - Apartment Administration software

    ( 1 - 2 The candidate has only partially implemented the design and has required Considerable assistance. ( The solution only works for a limited set of data. ( There are considerable obvious defects in the solution. ( The system is difficult for the user and/or operator.

  2. Computer Aided Design Package

    The specifications of DeltaCAD v5.0 are shown below: Component Minimal Recommended Processor Pentium II/equivalent Pentium II/equivalent RAM 64MB 64MB Hard drive 100MB 100MB Video card 16-bit colour, 800 x 600 resolution 24-bit true colour, 1024 x 768 resolution Optical drive CD-ROM CD-ROM Pointing device Mouse Mouse Operating system Windows 95,

  1. You need to discuss the advantages and disadvantages of someone in your

    SECTION B: Analysis The owner has recognised that the manual, paper based system of capturing sales, product and customer details has reached its capacity and is beginning to affecting her ability to grow the business further. An analysis of the existing procedures followed by the staff revealed specific problems presented

  2. What Computer Do I Buy?

    Programs are loaded from the hard disk and stored into the computer's memory upon usage. Whenever a program is stopped, the program is stored from memory back to the hard disk again. Not enough system memory will result in a state called swapping.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work