Computer Science CPU by Shaun Murphy https://padlet.com/shaunplaysgtx/jckf4aeoqo2z REVISION - CPU en-us 2018-04-25 07:49:30 UTC 2025-11-24 10:50:14 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Basketball.png CPU shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255122873 The components of the cpu:
  • Registers
  • Buses
  • ALU
  • Clocl
  • Decoder
  • CU (Control Unit)
  • Cache
]]> 2018-04-25 07:54:51 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255122873 Von Neuman shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255123622 Both Stored program and data are stored in the memory this is the design we use today.]]> 2018-04-25 07:58:55 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255123622 Registers shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255123880
  • Program Counter - Holds the address of the next instructions
  • Memory Data Register - A temporary store (buffer) for anything copied from memory
  • Accumulator  -  Stores the results of calculations carried out by the ALU
  • Memory Address Register - Holds the address of the memory locations currently being read (fetched) or written to.
    • ]]>     2018-04-25 08:00:38 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255123880     Fetch - Decode - Execute shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255124742 CPU sends signal to RAM for instruction
    CU Decodes the instruction when received decides what it means the executes it. If calculations need to be made, its performed at the ALU]]>     2018-04-25 08:05:38 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255124742     LAN shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255125509  A Local Area Network is a network in a small area such as a home, school, office building or group of building on a single site. Mostly everyone at home has a LAN that allows member to access the internet using a wireless router]]> 2018-04-25 08:08:59 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255125509 WAN shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255125786 A Wide Area Network connects separate LANs over a large geographical area to form a network of networks. Large companies can connect LANs at their different sites in order to share resources and data. Computers in a WAN can communicate with computers and users in other locations ]]> 2018-04-25 08:10:18 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255125786 WAN & LAN Management shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255126706 WAN will be manages by several different people or parts of an organisation working together (collective ownership). Alternatively, each LAN could be managed independently (distributed ownership)]]> 2018-04-25 08:14:20 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255126706 Client - Server shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255128098 In client-server networks there are two types of computer 
    • file servers - computers which control access and manage the network
    • Clients - Computers on which the users work.
    Using a client server:
    •  Users log in to the servers to access programs and data stored on htem
    • Servers are responsible for netwok security by allocating login names and password to users
    • All files are held on the server and can be backed up centrally 
    ]]>     2018-04-25 08:19:49 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255128098     Peer - Peer shaunplaysgtx https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255129224 In peer to pper networks there is only one type of computer.
    • There is no server to manage the network. All the computers are connected together equally
    • There are all equal and can communicate with each other directly without having to go through a server. 
    Using a peer to peer network:
    • Each client can act as a server. Other clients can share programs, data, and printers.
    • Security is distributed - each user can grant rights to others and allocate passwords. 
    • Data is stored on each client and not centrally.
    • Each user is responsible for backing up each client
    ]]>     2018-04-25 08:24:13 UTC https://padlet.com/shaunplaysgtx/jckf4aeoqo2z/wish/255129224