AS ICT YEAR 1 Module 2: Information Management

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AS ICT YEAR 1Module 2 Information Management
ManipulationWeek 1 Data Capture / Methods of
Data Capture / Data Encoding / Contexts of use

• Deepak Gautam

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Objectives

• To learn about methods of data capture
• To identify contexts for their use
• To understand the concept of data encoding

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Overview of Data Capture

• The process of collecting data in a form suitable
  for use in an information system is termed data
  capture.
• Example Electricity board reading a customers
  meter
• Data needs to be recorded and then input into a
  computer system. For example by using a form

 The design of such forms is of great
importance, since the clearer and more concise
the form, the less chance there is of inaccurate
data being recorded.
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System Inputs

• When designing forms The systems analyst would
  need to collect valuable details concerning the
  input,output and processing requirements of a
  system.
• source of the data
• form of the data.
• volume of data and its frequency.
• contents of the data.

Such information allows a systems analyst to
make recommendations on the most appropriate
methods of computer input.
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System Inputs

• System Analyst also has to take account of
  several tasks involved with the collection and
  entry of data to a system
• recording of data
• transmission of the data
• checking of data for obvious errors and omissions
  
• encoding of data into machine-readable form  
• validation of data by computer.

The designer needs to be aware of the available
input technologies. . These can be divided into
two categories, keyboard entry, and data capture
technologies
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Turnaround documents

• Turnaround documents are forms that the
  information system produces as output and which
  can at a later date be returned to the system as
  input.

Examples
A Breakdown Insurance Renewal form (refer to
handout)
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Group Activity 1
In groups briefly discuss the following

• 1.Give two examples of turnaround documents.

2. Comment on how they assist the customer.
3.Comment on how they help in the input of data
to the computer.
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DATA CAPTURE
We will now look at the different types of data
capture
Key To Disk Systems

• Keyboard Data Entry

Magnetic Stripe
Voice Data Entry
Scanners and OCR
Smart cards
Mouse, joystick, light pen, touch screen
Magnetic ink Character Recognition (MICR)
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DATA CAPTURE cont..
Other data capture technologies include

• Optical Mark Recognition (OMR)

Bar code reader or scanner
Hand-held input devices
Digitiser (Graphics tablet)
Magnetic ink Character Recognition (MICR)
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Class Discusion
In groups briefly discuss the following
It has been suggested that other information such
as a kidney donor record and/or a driving
licence could be held on the same chip card that
allows you to withdraw cash and pay for
goods.   1.1.What would be the benefits of doing
this ? 2. What other information would it be
useful to hold on a card of this sort?
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Individual exercises
Handout Page 16 Question 1 a,b,c Time Allowed
10 minutes
Handout Page 16 Question 4 a,b Time Allowed
10 minutes
Handout Page 16 Question 2 a,b Time Allowed
10 minutes
Handout Page 16 Question 3 a,b Time Allowed
10 minutes
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Homework

• Complete All Exercises for next week (in handout
  page 16)
• Monday 27th 4pm
• Hand in to tutor!