GCSE COMPUTER SCIENCE Topic 4 - Computers 4.1 Machines and Computational Modelling

This presentation covers the following content from the specification Students should: 4.1.1 understand the input-process-output model

Computer Systems What makes a computer system? Part A. Watch the following video: Link: https://www.youtube.com/watch?v=E8umjRRaMAA

Drag the pictures to the correct categories, computer system or not: Activity 1 Drag the pictures to the correct categories, computer system or not: Computer systems Non-computer systems

Activity 2 Class Discussion Four Elements So what does make a computer system? ACTIVITY Draw this diagram in your workbook

Key Terms Below are three key terms you need to understand Input To enter data into a computer system Process To change the meaning or format of some data Output To receive data that has been processed or stored ACTIVITY Write the three definitions above in your workbook

Computer Systems What makes a computer system? Part B. Watch the following video: Link: https://www.youtube.com/watch?v=9pk6aoCLNXM

Computer Systems PC Example CPU, GPU Keyboard, mouse, microphone, webcam, touchscreen Monitor, speakers, headphones, touchscreen Hard drive, USB stick, CDs NOTE: A touchscreen can be both input and output

Activity 3 List the inputs and outputs of each of the following Computer Systems below: Device Name Inputs Outputs Laptop Washing Machine Calculator Xbox One Smart Phone Digital Watch Microwave

Activity 3 Laptop INPUTS OUTPUTS Touchpad Monitor Microphone Speaker Keyboard

Activity 3 Washing Machine INPUTS OUTPUTS Buttons Monitor (screen) Dial Motors Heat

Activity 3 Calculator INPUTS OUTPUTS Buttons Monitor (screen) Solar panels

Activity 3 Xbox 360 INPUTS OUTPUTS Buttons Speaker Microphone Monitor (screen) Movement (Kinect) Vibration

Activity 3 Smartphone INPUTS OUTPUTS Touchscreen Speaker Microphone Monitor (screen) Camera Vibration Fingerprint reader Flash light Proximity sensor Accelerometer Gyroscope

Activity 3 Digital Watch INPUTS OUTPUTS Buttons Monitor (screen) Speakers Vibration

Activity 3 Microwave INPUTS OUTPUTS Buttons Monitor (screen) Touchpad Heat Light

Activity 4 Fill in the blanks Write out the following sentences, use the words below to fill in the gaps correctly: A computer system has one or more __________ to provide data. This __________ is then __________ in some way. The outcome of the __________ is sent to an __________ device. For processing to take place, there needs to be a set of __________ of what needs to be done. This set of instructions is called a __________. This __________ is called a stored-program computer. Words to use: program, system, processing, processed, output, instructions, data, inputs.

Write out the following summary in your workbook. Activity 5 4.1 Summary Write out the following summary in your workbook. Although computers come in all sorts of shapes and sizes they all do principally the same thing. They take inputs, process them according to a given set of rules, and generate outputs. Algorithms (a set of rules that are followed to complete a task) expressed in program code specify the processes a computer carries out.