Why study subsidiary ICT? • Helping the learner to develop and strengthen knowledge of ICT and be aware of new and emerging/up coming technologies. • Encouraging the learner to develop as an independent user. • Encouraging the learner to develop ICT skills to improve work in a variety of subject areas. • Providing the learner with skills for lifelong learning.
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Why study subsidiary ICT? Helping the learner to develop and strengthen knowledge of ICT and be aware of new and emerging/up coming technologies. Encouraging.
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Why study subsidiary ICT?
• Helping the learner to develop and strengthen knowledge of ICT and be aware of new and emerging/up coming technologies.
• Encouraging the learner to develop as an independent user.
• Encouraging the learner to develop ICT skills to improve work in a variety of subject areas.
• Providing the learner with skills for lifelong learning.
INTRODUCTION TO COMPUTERS: DESCRIPTION OF A COMPUTER
• A computer is an electronic device that accepts user input (data) and processes it following instructions into meaningful output.
• A computer is an electronic device that can accept data input, processes it according to some specific instructions, outputs the information and stores the results for future use.
• A computer is an electronic device which is capable of receiving the input (data from the user), storing it, processing it according to a set of instructions and producing the output for the user in a usable and meaning form.
Note the following about computers
• Digital devices perform arithmetic and logical functions that is process data inform of discrete values that is numbers that can be defined like 1,2,3,4.
• Analog devices process data that is in a continuous form and measurable quantities/units like thickness of steel plates.
Parts of a computer
System unit• The system unit is the core
of a computer system.• Usually it's a rectangular
box placed on or underneath your desk.
• Inside this box are many electronic components that process information.
Hard disk drive• Your computer
stores information on a hard disk—a rigid platter or stack of platters with a magnetic surface.
CD and DVD drives• Nearly all computers today
come equipped with a CD or DVD drive, usually located on the front of the system unit.
• CD drives use lasers to read (retrieve) data from a CD; many CD drives can also write (record) data onto CDs.