Computer SystemsLesson 2

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Resources: L2 Worksheet, 2 X Processor Chips, USB Pen, Server, SD Card, Micro SD Card, DVD, CD, Floppy disk, Tape, internal HD, externalHD, Sim card.

A451 - GCSE Computing

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STARTER

Task: On worksheet provided list as many input and output devices of a computer system. Try and provide other devices than the ones right in front of you.

A451 - GCSE Computing

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LESSON OBJECTIVES

What are we learning?Today we are going to look into other components of a computer system, which was not covered in last lesson.

How are we going to learn?Today you are going to learn individually, in pairs and as a group.

Why are we learning?To enhance your current knowledge of components of a computer system and provide a greater insight into how they communicate with each other.

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What is an input?

From your worksheet give me an example of an input?

What is an output?

From your worksheet give me an example of an output?

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What is the well-known name for a processor that is shortened to the letters CPU?

What does the processor do?

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1.) Complete sections 2, 3 and 4 from worksheet.

2.) Work with the person to your left and open the bag of images that have been given to you. Put the images in order of size smallest to largest what they think is the amount of storage space they can hold.

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Name of medium: Sim CardSim card storage size: 256kbHow many 1 megabyte files can it store: 0 file

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Name of medium: Floppy disk3.5 inch floppy storage size: 1.47mbHow many 1 megabyte files can it store: 1 file

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Name of medium: RAMStorage size: 4GBHow many 1 megabyte files can it store: about 4,096 files

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Name of medium: DVD3.5 inch floppy storage size: 17.08GBHow many 1 megabyte files can it store: about 17,408 files

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Name of medium: Flash memory card / SD CardStorage size: 128GBHow many 1 megabyte files can it store: about 131,072 files

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Name of medium: USB pen driveStorage size: 256GBHow many 1 megabyte files can it store: about 262,144 files

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Name of medium: Hard DriveStorage size: 320GB How many 1 megabyte files can it store: about 327,680 files

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Name of medium: Magnetic TapesStorage size: 500GB How many 1 megabyte files can it store: about 512,000 files

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Task: You have been handed a coloured square, which states a type of storage. Research that storage type on the internet, write a description and provide an example of the medium used.

*Be prepared to share your examples to the rest of the class.

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PLENARY

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Apple is reportedly spending upwards of $1bn on Project Dolphin, which at 500,000 square feet will be one of the world's largest data centres. The server farm is being built to back up Apple's iCloud, its offline storage system.

A451 - GCSE Computing