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OCR GCSE Computing

Sasha -- Computing GCSE Inglés

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OCR GCSE Computing

How to investigate and discuss computer science technologies, considering ethical, legal https://youtu.be/yOZnzAoywkE?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Legislation https://youtu.be/-bgTNETy51U?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Privacy issues https://youtu.be/0wia_H4Y7Dc?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Cultural implications https://youtu.be/bRF-4fB5dIg?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
How key stakeholders are affected by technology https://youtu.be/zibnWKPey5g?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Environmental impact of computer science https://youtu.be/4nOsXv4RVFY?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-

Programming
- Iteration
  - for x in range(10): print(x)
- Sequence
  - Turn red light on Wait 10 seconds Turn amber light on Wait 3 seconds Turn red and amber light off Turn green light on Carry out instructions one after the other
- Selection
  - if else if else
- High level languages
  - Python
  - Java
  - C; C++
  - Visual Basic
  - Closer to human language. Easier for humans to read and understand
- Low level language
  - Machine code
  - Assembly language
Networks
- Types of networks https://youtu.be/yjWR0OP2SzY?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Factors that affect performance of a network https://youtu.be/vTP6mdCw1uE?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Client server and peer to peer  https://youtu.be/B3jRl98Ymrw?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Layers https://youtu.be/_CXFFqPbOXU?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Packet Switching https://youtu.be/lfYl8SohrCo?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Topology
  - Star and Mesh networks https://youtu.be/Owj3cxp13bQ?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Ring
  - Star
  - Bus
- Hardware
  - Hardware to connect to a network https://youtu.be/PPr9Oa_jj1Q?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - WiFi https://youtu.be/Svm06j2_x5w?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Ethernet https://youtu.be/PzVZpXGuI1I?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Protocols https://youtu.be/3Y2aQPwY0fo?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Router
  - Hub
  - Switch
  - Bridge
  - Fibre
  - Coaxial
  - Terminator
- LAN
- WAN
- Bandwidth
- Client-server
- Peer-to-peer
- The Internet
  - The Internet https://youtu.be/Sa2y9JngSnM?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Virtual networks
  - https://youtu.be/8F5Y4TwAmfc?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Computer hardware
- https://youtu.be/rxSWH6hIO5k?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
- Input devices
  - Input and Output devices https://youtu.be/oUSFS2ROMnU?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
  - Keyboard
    - Mouse
      - Scanner
        Touch screen
        Microphone
  - Accessibility
    - Braille keyboard
- Output devices
  - Monitor
    - Speakers
      - Printer
        Laser
        Ink jet
        Plotter
        Projector
- Processing devices
  - CPU central processing unit
    - https://youtu.be/6UVMCIQ6nFI?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
    - Cache
    - Arithmetic Logic Unit
    - Registers
    - Cores
    - Multi tasking
    - Clock speed
    - Address bus
    - Data bus
    - Von Neumann Architecture
      - https://youtu.be/KR2ejxGq464?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
    - Performance
      - https://youtu.be/hGkyon3c7rQ?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - RAM (Volatile) / ROM (non-volatile)
    - https://youtu.be/PkcOYz7yLM4?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
    - https://youtu.be/N2dukz_5Skg?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Graphics card
  - Sound card
  - Motherboard
- Secondary Storage devices
  - https://youtu.be/-uAbk2UgzIg?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
  - https://youtu.be/nE8g77ftMvU?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Common Types of Storage https://youtu.be/2vJ0NfG1G_s?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Suitable storage devices for a given purpose https://youtu.be/MmyB4d8oGq8?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Magnetic
    - Hard disk drive
    - Floppy disk
    - Magnetic tape
  - Optical
    - CD-ROM; CD-R; CD-RW; CD-RAM
    - DVD - Digital Versatile Disk
  - Flash Memory
    - https://youtu.be/naNdLozCp1Q?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
    - SD Cards
    - Solid State Drives
    - BIOS
  - Data capacity
    - https://youtu.be/OEcRsaJVe1M?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Embedded systems
  - https://youtu.be/AgGOH1vSTyk?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Virtual memory
  - https://youtu.be/xziqSwXKjRY?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Computing units
- https://youtu.be/eG6xdjqcHOs?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
- Binary
  - https://youtu.be/eG6xdjqcHOs?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
  - Why data is represented in binary https://youtu.be/wF4wzQNB_G8?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - One bit has 2 different values
  - 0 1
  - Base 2
- Denary
  - https://youtu.be/eG6xdjqcHOs?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
  - Base 10
  - How we (humans) count
  - 0 1 2 3 4 5 6 7 8 9
  - 10 different values 0-9
- Hexadecimal
  - https://youtu.be/Ft7IdQYu0Zk?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
  - One bit has 16 different values
  - 0 1 2 3 4 5 6 7 8 9 A B C D E F
    - 0-15
  - Base 16
- 1111 - nibble
- 1 - bit
- 1111 1111 - byte
- Character sets
  - https://youtu.be/_FWd-8xr8rc?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
  - ASCII
  - Unicode
Software
- https://youtu.be/LfiSAhno3NI?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
- Operating systems
  - Purpose and function of system software https://youtu.be/mvpc9zst-y4?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Operating systems part 1 https://youtu.be/m574Z-ebSaY?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Operating systems part 2 https://youtu.be/4IJZY-4cjhc?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Memory management
  - File systems
  - Networking
  - User management
  - Input and output
  - Interrupt handling
  - Kernel
    - Deals with low level operations such as memory management
  - multi-tasking
    - Allow more than one application to run at the same time, e.g listening to music while writing an essay in Word
- Utility programs
  - Utility system software https://youtu.be/suqAIPF2VKs?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
  - Antivirus
  - Anti spyware
  - Firewall
  - Backup software
  - Clipboard
  - Cryptographic tools
  - Compression tools
  - Disk cleaner
  - Disk defragmenter
  - Disk partitioning and formatting tools
- Development models
  - Custom written/bespoke
  - Off the shelf
  - Proprietary
  - Open source
- Open source vs proprietary
  - https://youtu.be/wq2GY4tXjQM?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Logic Gates
- https://youtu.be/nBUNxuPkPts?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd https://youtu.be/56W-SBpdy9o?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
- Simple logic diagrams https://youtu.be/eRW0cpApegk?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Computing related maths https://youtu.be/XImmzjrMj6A?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- AND
- OR
- NOT
- Truth tables
  - Truth tables https://youtu.be/YtDJRYdnEvw?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
Databases
- Persistent and organised store of data
- File
- Relation (table)
- Tuple (record/row)
- Attribute (field)
- Flat-file database
  - All data stored in one table
  - Data is duplicated
    - Data redundancy
    - Possibility of errors
  - No structural information
- Relational database
  - Entities
    - One thing
      - e.g. student
      - e.g. course
      - e.g. car
  - Primary key
    - An attribute that contains data unique to that relation (table)
    - Provides the link to another relation
  - Foreign key
    - The link to another relation
    - A foreign key is the primary key in another table
Images
- https://youtu.be/OooQh_4-WYU?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
Sound
- https://youtu.be/p7GLbx0Yde4?list=PL04uZ7242_M5n3zzAhcX-eslHud2Lyycd
System security
- Forms of attack https://youtu.be/M6hhP0PcJbk?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Threats posed to networks https://youtu.be/9zC4FJk-YFg?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Identifying and preventing vulnerabilities https://youtu.be/bNRZb2tPcR8?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Malware
- Trolans
- Phishing
- Worms
Youtube playlists
- Craigndave - excellent and very clear https://www.youtube.com/playlist?list=PLCiOXwirraUAvkTPDWeeSqAKty3LAG37-
- Somerevision https://www.youtube.com/playlist?list=PLCE06F413DAD96BBF
- Axsied (link available on your Smarthomework - cannot share here due to copyright)

Información

Descripción: GCSE Computing Mapa Mental sobre OCR GCSE Computing, creado por Sasha -- el 09/05/2017.
Creado por: Sasha --
Visitas: 1
Historial: Creado por Wayne Vaughan · 3 may 2017

Copiado por Sasha -- · 9 may 2017
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OCR GCSE Computing

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