Chapter 6 ICT
6.2 - Data handling applications
Describe the use of a range of data handling applications (e.g.
surveys, address lists, clubs and society records, school reports and
school libraries)
Many ICT systems perform simple data handling tasks. In these systems
the data is input into the computer into a simple database structure and it
can then be processed in some way and the results output in the form of
reports.
A number of applications make use of simple data handling techniques,
such as:
• surveys
• address lists
• clubs and society records
• school reports
• school libraries.
Advantages of Data Handling Applications for Storing Data
- Data can be updated, organised, sorted and searched in different ways.
- Data can displayed or printed in different formats.
- Data can be backed up or moved using storage media.
- Huge storage space not required (filing cabinets)
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, Chapter 6 ICT
Surveys
The collection of information from a sample of individuals through their
responses to questions
Information from surveys could be held on a database so that data could be
analysed and
queried.
Surveys are used to collect information by asking lots of different people
the same set
of questions. Because of the huge amounts of data collected, the
questionnaires might
use OMR (optical mark recognition) for the input of data.
The completed questionnaires can be read at high speed by the optical
mark reader, which saves time and money.
Once the data has been entered it can be stored and processed to produce
statistics or graphs and charts.
Survey results are often processed using spreadsheet software and
displayed as a series
of graphs.
The advantages the survey
• faster to get results
• fewer errors
• easier to do a statistical analysis and less expensive (need fewer people).
-
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, Chapter 6 ICT
6.3 Measurement applications:
--Computers can be used in conjunction with sensors to measure physical
quantities such as temperature, pressure, light intensity, infra-red radiation, etc.
Measurement applications, using sensors and other electronic hardware (such as
a
microprocessor), are many and varied.
Role of Measurement Applications:
-Sensors are placed to measure physical variables. The data from sensors are
measured in
analogue. The analogue signal is then converted to a digital signal using a
convertor.
Thermometer for measuring temperature Anemometer for
measuring wind speed Wind vane for measuring wind
Weather Stations direction Hygrometer for measuring humidity Barometer for
measuring atmospheric pressure.
Sensors are placed in the green house to measure whether
Green House plants are growing in
the correct conditions:
--Light, Moisture, Humidity, PH Levels
Sensors will be attached to the body to monitor:
Patients Vital Signs --heartbeat, blood pressure, temperature etc.
Sensors
Sensors are used to detect and measure physical quantities. Here are some
examples
of sensors:
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6.2 - Data handling applications
Describe the use of a range of data handling applications (e.g.
surveys, address lists, clubs and society records, school reports and
school libraries)
Many ICT systems perform simple data handling tasks. In these systems
the data is input into the computer into a simple database structure and it
can then be processed in some way and the results output in the form of
reports.
A number of applications make use of simple data handling techniques,
such as:
• surveys
• address lists
• clubs and society records
• school reports
• school libraries.
Advantages of Data Handling Applications for Storing Data
- Data can be updated, organised, sorted and searched in different ways.
- Data can displayed or printed in different formats.
- Data can be backed up or moved using storage media.
- Huge storage space not required (filing cabinets)
1|Page
, Chapter 6 ICT
Surveys
The collection of information from a sample of individuals through their
responses to questions
Information from surveys could be held on a database so that data could be
analysed and
queried.
Surveys are used to collect information by asking lots of different people
the same set
of questions. Because of the huge amounts of data collected, the
questionnaires might
use OMR (optical mark recognition) for the input of data.
The completed questionnaires can be read at high speed by the optical
mark reader, which saves time and money.
Once the data has been entered it can be stored and processed to produce
statistics or graphs and charts.
Survey results are often processed using spreadsheet software and
displayed as a series
of graphs.
The advantages the survey
• faster to get results
• fewer errors
• easier to do a statistical analysis and less expensive (need fewer people).
-
2|Page
, Chapter 6 ICT
6.3 Measurement applications:
--Computers can be used in conjunction with sensors to measure physical
quantities such as temperature, pressure, light intensity, infra-red radiation, etc.
Measurement applications, using sensors and other electronic hardware (such as
a
microprocessor), are many and varied.
Role of Measurement Applications:
-Sensors are placed to measure physical variables. The data from sensors are
measured in
analogue. The analogue signal is then converted to a digital signal using a
convertor.
Thermometer for measuring temperature Anemometer for
measuring wind speed Wind vane for measuring wind
Weather Stations direction Hygrometer for measuring humidity Barometer for
measuring atmospheric pressure.
Sensors are placed in the green house to measure whether
Green House plants are growing in
the correct conditions:
--Light, Moisture, Humidity, PH Levels
Sensors will be attached to the body to monitor:
Patients Vital Signs --heartbeat, blood pressure, temperature etc.
Sensors
Sensors are used to detect and measure physical quantities. Here are some
examples
of sensors:
3|Page
