Name 5 health and safety problems ICT users are faced with
The first is Repetitive Strain Injury, then Back Problems, then Eye Strain, then Headaches and lastly Stress.
State 5 different causes of health and safety problems.
Workers carry out lots of repetitive tasks. They also sit at a computer for a long time. They can also have flickering and poor quality monitors. They can also grip the mouse too hard and lastly, they can have slow performing computers.
State 5 ways of preventing health and safety issues
Workers can take regular breaks. They can use ergonomic keyboards. They can fix their monitors or replace them. They can make sure they have regular eye tests, they can upgrade their computers.
What does a software designer have to consider when designing a new piece of software?
Screen layouts should be clear so that eye strain is minimised. Colour schemes should not be too bright and should have good contrast to prevent eye strain. Help facilities should enable learning to prevent stress. Menu systems should be logical to prevent stress. Drop down lists can reduce data entry so prevent RSI.
What investigative methods can be used to analyse a problem?
Interview, Questionnaire, Observations and Existing Documents
What is input?
Input is the capturing of data
What is a process?
A Process is the converting of data into information
What is output?
Output is the information produced
What is validation?
Checking that data entered is sensible. For example, Presence Check
What is verification?
Checking by comparison that no alterations are made to data on entry into the computer system. For example, keying data twice.
Name four types of validation check
Presence Check, Data Type Check, Range Check, Length Check
State three types of data
Text, Number, Currency
Give the information that you would need in order to determine which
method of input would be best.
Volume of input , Computer being used , Needs of user , User skill level , Cost/benefit , Error checking
Explain the meaning of the term data capture
Data capture is the way the computer obtains its data for processing
Give the names of four automatic methods of data capture.
They are Magnetic ink character recognition (MICR), Optical mark reading (OMR), Bar code reading and Optical character recognition (OCR)
Give the names of three manual methods of data capture
They are keyboard entry, pointing methods and touch screen methods
What forms can output information take?
They can take the methods of printing, projection, viewing and hearing.
What reasons are there for storing data?
To store files and programs for future use, to transfer it from one place to another and to back up important files in case of loss or damage
What is systems software and why is it needed?
It performs tasks that are required because a computer is used.
Explain what is meant by the term generic package software.
General purpose software that is appropriate to many areas
Describe what is meant by the term macro
A sequence of instructions that performs a task required on a regular basis
What is applications software?
Carries out the tasks the user wants to perform
What is bespoke software?
Tailor made software for a specific task
What is an operating system?
An OS is a set of programs that controls how the user interacts with the hardware and software of a computer
What are the 3 features of utility software?
File Management, File Compression and Configuration of files
How do you decide which one to use?
Performance, Functionality and Usability
What is the purpose of implementing a solution?
So that the solution can be tested
Documentation can be provided to assist the user
What is your test strategy and what are the main types of tests you have carried out.
A test strategy is a plan of the testing to be carried out. It includes Functional Testing which is each testing function as it is developed, User Testing which allows the user to give feedback, Systems Testing which test the system as a whole and Navigational Testing which ensures the hyperlinks work
Why is it important to test?
To test the accuracy of input, the
accuracy of output, the validity of data and ensuring the Client Requirements are met
What types of test data are there?
Normal Data, Erroneous Data and Boundary data
What should you consider when devising an evaluation?
Does the solution do what it is supposed to do?
Is the solution intuitive to use?
Is the solution an effective one?
Is the input data accurate?
If not, then what is wrong with the solution
What criteria would you have to think about when evaluating a solution you have created?