Computer bits and pieces Hardware! Do you actually know anything about the devices you use?

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Presentation transcript:

Computer bits and pieces Hardware! Do you actually know anything about the devices you use?

Starter – order in size smallest to biggest

Lesson outcomes All of you will be able to identify the main components and their role in a system Most of you will be able to explain and identify the best computer for a given situation Most of you will be able to analyse, suggest and compare different hardware

What are these little bits? Think, pair share...

CPU / Processor / Microprocessor The first microprocessor One of the latest microprocessors

Key concept... Processors are made up of thousands of transistors. Transistors are used to switch electronic signals around a circuit. So, the equivalent would be... They are microscopic.

CPU / Processor / Microprocessor Microprocessors are measured by a ‘clock speed’ Its like a metronome ticking...sending out a regular pulse. It then makes the calculations and processes the data synced up to the pulse. The number of calculations it can do in one second is measured in Hertz.

Quick Quiz – think pair share What is the main component of a processor? Why is it referred to as the brain of the machine? What is its speed measured in? What is the processor composed of?

RAM – think, pair share... When the computer is active it needs memory to store data and instructions temporarily.

Oh oh...When its gone, its gone... Thinking time... My computers just switched off...My work wasstored in the RAM Discuss What are the consequences? What are the preventions you could put in place?

Secondary storage Uses a laser...Uses a magnetStores on a chip

or

Motherboard – where its all kept

What is the best choice? Laptop 1Laptop 2Laptop 3Laptop 4 Display12 inch15 inch widescreen 17 inch widescreen 20 inch widescreen Processor1.6 GHz1.8 Hz2 GHz2.8 GHz Memory1 GB3 GB4 GB8 GB Hard Drive160 GB250 GB2 TB1 TB Wireless enabled? YesNoYes USB Ports2448 Card ReaderYesNo WebcamNoYesNo HDMINo YesNo

Questions: What component is the brain of the computer? What memory is used while the computer is active? What type of storage is a blu ray disk? Where are all the components located in a computer? Where is something you copy and paste stored?