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Data Processing is the process of producing meaningful information from raw data.  It describes the series of actions taken to produce useful information by collecting all items of data together and performing operations on them.  The aim of data processing is to convert raw data into information.

Data: Data represent the raw unprocessed input element introduced into a system from which useful information is extracted.  Data is used to describe the facts and figure obtained which have not been grouped, related or evaluated in any way.

 Information: Information consist of data which have been recorded organized classified  and processed into useful and meaningful form.  It is the output element of a data processing system.

 QUALITIES OF A GOOD INFORMATION

(i)   Accuracy

(ii)  Timeliness

(iii) Completeness

(iv) Relevance

(v)  Up to date

(vi) Cost effectiveness

 DATA PROCESSING STAGES

(i)   Origination

(ii)  Preparation/Sorting

(iii) Input

(iv) Processing

(v)  Output

(vi) Storage

(vii) Distribution

METHODS OR TECHNIQUE OF DATA PROCESSING

(a)  Manual Data Processing

(b)  Mechanical Data Processing

(c)  Electronic Data Processing

 EVALUATION

  1. Differentiate between data and information.
  2. List five qualities of a good information.

 

THE ELECTRONIC COMPUTER

Characteristics of a Computer

  1. Speed – high speed of operation
  2. Storage – Large storage volume

iii.  Versatility – Can be used to perform wide range of tasks

  1. Diligence – It can perform similar operations at the same speed and accuracy at all times.
  2. Automatic – Tasks are performed automatically based on the programme (instructions) given to the computer.

 ELEMENTS OR COMPONENTS OF A COMPUTER

  1. INPUT DEVICES – i. .e. the unit through which data are fed into the computer e.g. keyboards, terminals, optical mark readers optical character readers, magnetic ink character readers.
  2. CENTRAL PROCESSING UNIT – This is the part of the computer that carry out the computations and calculations. It is made up of
See also  Program Development

(a)        The control unit

(b)        The Arithmetic and Logic Unit

(c)        The Internal Memory or Storage

  1. OUTPUT DEVICES – These are used to transmit processed data to the users e.g printer, visual display units, plotters.
  2. STORAGE DEVICES – These are external storage devices used to hold information that would be required by the users of the computer e.g. diskettes, magnetic tapes, punched cards etc.

 APPLICATION OF COMPUTERS IN COMMERCE

Computers are used in finance and commerce for such applications as;

  1. E-Commerce
  2. E-Banking e.g Online banking
  3. E-Business
  4. E-Payment
  5. E-Government

 EVALUATION

  1. What is a Computer?
  2. List and explain three methods of data processing

 GENERAL EVALUATION QUESTIONS

  • Explain five circumstances when an insured may not be indemnified
  • Explain the following terms (a) insurable risks (b) non insurable risks
  • Give five main differences between a retail co-operative society and a public limited company
  • Explain five functions of the Central Bank of Nigeria
  • Explain five reasons why many small businesses turn into private limited companies

 READING ASSIGNMENT

Simplified and Amplified Commerce page 487-501

 WEEKEND ASSIGNMENT

  1. The fourth stage of the accounting information system is ____________

(a) recording                (b) interpreting            (c) summarizing           (d) classifying

  1. In the permanent storage device, DASD means________

Direct Access Systems Device                       (b) Direct Access Storage Device       (c) Data Access System Device    (d) Data Access Storage Device

  1. The input output and central processing units are the basic components of a computers _____
See also  Concept of Data Processing

(a) memory        (b) software               (c) printer           (d) skill

  1. The computer that functions by taking discrete numbers and performing mathematical calculation is called ______

(a) mainframe              (b) digital        (c) hybrid analogue

  1. Which part of the computer system does the keyboard device belong to ______

(a) output unit             (b) logic unit                (c) input unit               (d) control unit

 THEORY

  1. Mention and explain with diagrams, the stages of data processing.
  2. State four reasons why some firms still use manual data processing instead of electronic data processing.

 

See also

GOVERNMENT REGULATION OF BUSINESS

EMPLOYER / EMPLOYEE RELATIONSHIP | DUTIES, RIGHTS

SALE OF GOODS ACT / HIRE PURCHASE ACT

TYPES OF AGENTS And AUCTIONEER

Contract | Definition, Parties, Types. Elements

 

Related Words

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