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Module 1, Concepts of Information and Communication Technology (ICT)
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Concepts of ICT (demo)
Topic 3
Know what computer memory is
Know what computer memory is
Cache
Cache
Cache is a very fast type of RAM directly attached to particular components such as the CPU. It enables a certain amount of data to be copied from the main memory so the component can access it faster. Cache is usually a small amount of static RAM, which is much faster than SDRAM, however it is also far more expensive to produce.
Data stored in a component’s cache is immediately available to the component — it doesn't have to access the main memory and copy the data across before it can be used.
CPUs usually have a certain amount of cache built into them. AMD AthlonXP chips have a built-in cache of 512KB or more. Some motherboards also have cache installed on them, and modern hard disks usually have 8Mb of cache or more.
◄ Choosing a computer - some tips
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Quick message from Stuart Mealor (HRDNZ, Moodle Partner)
Notes for Moodle Teachers
What is 'Concepts of Information and Communication Technology'?
Please READ THIS first (includes your first task)
Discussion forum
Your learning diary
A 'just for fun' starting quiz
Download a Copy of this Course
Understand the term hardware
Understand what a personal computer is
Identify common handheld portable digital devices
Identify the main parts of a computer
Identify common input and output ports
Know some of the factors that impact on a computer’s performance
The development of the PC exercise
Know that the speed (operating frequency) of the CPU is measured in megahertz (MHz) or gigahertz (GHz).
General concepts - review questions (marked by a tutor)
Choosing a computer - some tips
Know storage capacity measurements: bit, byte, KB, MB, GB, TB.
Know the main types of storage media
Module 1 Glossary
Images reference
Know storage capacity measurements: bit, byte, KB, MB, GB, TB. ►