ASSIGNMENT 2

Assignment No 2

 

Lesson 1B 

             LOOKING IN SIDE THE COMPUTER  SYSTEM

                           QUSETION &ANSWER

Q1.List the Four parts of complete computer system?

Ans .Parts of Complete computer system are

1.HARDWARE

          The mechanical devices make up the computer are called Hardware.The computer hardware consist of interconnected electronic device that you can use to control the computer's operations,input and output.

2.SOFTWARE

      Software is a set of instruction that makes the computer perform tasks.In other words,software tells the computer what to do.

3.DATA

     Data consist of individual facts or pieces of information that by themselves may not make much sense to a person.

4.USER

   People are the computer operators,also known as user.

 

Q2.What are the four phase of the information processing cycle?

Ans.Four phases of information processing cycle are

1.Input

2.Processing

3.Output

4.Storage

1.Input

 During this part of the cycle, the computer accepts data from some source, such as the user or a program,for processing.

2.Processing

 During the part of the cycle,the computer's processing component perform actions on the data, based on instruction from the user or a program.

3.Output

 Here the computer may be required to display the results of its processing.

4.Storage

In this step, the computer permanently stores the result of its processing on a disk, tape, or some other kind of storage medium.

Q3.Identify four categories of computer hardware?

Ans.Categories of computer hardware are    

1.PROCESSOR

  The processor  is like the brain of computer; it organize and carries out instructions that come from either the user or the software.

2.MEMORY

 memory is one or more sets of chip that store data and/or program instructions, either temporarily or permanently. memory is a critical processing component in any computer.

3.INPUT DEVISE

     Input devise accept data and instruction from the user or from another computer system.

     A variety of  input devise are

• Trackball

• Joystick

• Scanner

• Keyboard

• Digital camera

• Microphone

OUTPUT DEVISE

       Output devise return processed data to the user or to another computer    system.

      A variety of output devise are

• Headphones

• Speaker

• Monitor

• Printer

4. STORAGE

A computer also needs a place to keep program file and related data when they are not in use. The purpose of storage is to hold data permanently, even when the computer is turned off.

 

Q4.List four units of measure for computer memory and storage,not including the byte?

Ans.: Unit of measure computer units are

·         Kilobyte

·         Megabyte

Gigabyte

·         Terabyte

 

Q5 : What are the two most common input and output devices?

Ans: Two most common input and output devices are

•       Touch screen

•         Modems

   

  Q6: Name and differentiate the two main categories of storage devices?
  Ans
  : Two main categories of storage devices are
  
  
  ·        Magnetic storage
  
  
  ·        Optical storage
  
  
  Magnetic storage
   There are many types of computer storage, but the most common is the         magnetic disk. The hard disk serves as the computers  primary cabinet because it can store far more data than a diskette can contain. Diskettes are used load data onto the hard disk, to trade data with other users, and to make backup copies of the data on the hard disk.
  Optical storage
  :In addition to magnetic storage, nearly every computers sold today includes at least one form of optical storage-devices that use laser to read data from or write data to the reflective service of an optical disk. CD-ROM device one of the example of optical storage.
  
  
  
  
  
  
  Q7: Name and diffentiate the two main categories of computer software?
  
  

  Ans: The two main categories of computer software

  ·        Operating system

  ·        Application

   

  Operating system

  OS is a basic programme it tells a computer how to work or operate. The OS also allows you to leads other programmes, that do the specialized task. OS provides a user interface and not user friendly. Example dos, Microsoft windows.

  Applications:

    Applications are programs that put on to the computers to do specialized     task. Microsoft word, internet explorer are example of applications.

   

   

  Q8: what is the difference between data and information?
  
  
  Ans: Differenve between Data And Information.
  
  

  Data	Information
  ·        Data collects raw facts and figures	Information process data
  Data is not meaningful for making decisions.	Information is meaningful for making decisions.
  Data is in unorganized form	Information is in organized form

  
  
   
   
   
  Q9:What is the fundamental difference between data and programmes?
  
  

  Ans:The fundamental difference between data and programmes this way, data is for  people to use, but programmes are for computer to use.

   

  
  
  10. List five tasks a user may be responsible for, when working with a personal
  computer.?
  
  

  Ans:The user may be responsible for setting up the system, installing software,

  running programs, managing files, and maintaining the system.

  
  

  Q11:What is hardware?Give Example?

  Ans:HARDWARE

  The mechanical devices make up the computer are called Hardware.Hardware is any part of computer you can touch.The computer hardware consist of interconnected electronic device that you can use to control the computer's operations,input and output.

  Example:

         Monitor, Keyboard, Mouse, Modem, Flash Drive.Hardware Components: Processor etc.

  Q12:What is Software?Give Example?

  Ans: Software is a set of instruction that makes the computer perform tasks.In other words,software tells the computer what to do.

  Example:

  Ms office,Java,Sql,Php etc.

  Q13:Write down the units of measure for computer memory and storage?
   
  Ans: 
   KILOBYTE(KB)
  A kilobyte (KB) is a multiple unit used for binary data. Although "kilo" generally refers to 1,000, in computer science, one kilobyte often refers to 1,024 (2^{^10}) bytes. It may also be used to refer to 1,000 bytes depending on the context. This measure is often used to describe memory capacity and disk storage.
   
   MEGABYTE
  A measure of a computer's disk storage capacity or a computer file's size. One megabyte is equal to 1,024 kilobytes. A larger amount of megabytes increases a computer's ability to store and process more information. Megabytes are often abbreviated as MB. For instance, most cd-roms have a storage capacity of 700MB.
   
  GIGABYTE
  A gigabyte (GB) is a measure of computer data storage capacity and is "roughly" a billion byte .
   
  TERABYTE
  A terabyte (TB) is a measure of computer storage capacity that is 2 to the 40th power or approximately a trillion bytes (that is, a thousand gigabytes). The prefix tera is derived from the Greek word for monster.
   
    Q14:Explane the term ‘Hard copy’ and ‘Soft copy’?

  Ans: SOFT COPY:

  A soft copy is a document saved on a computer. It is the electronic version of a document, which can be opened and edited using a software program.

  HARD COPY:

   A hard copy is a permanent reproduction, or copy, in the form of a physical object, of any media suitable for direct use by a person.

  Q15:What is Operating system?Give example.

  Ans: Operating system

  OS is a basic programme it tells a computer how to work or operate. The OS also allowsyou to leads other programmes, that do the specialized task. OS provides a user interfaceand not user friendly.

   

   Example:  Dos, Microsoft windows.Windows  7