View
217
Download
0
Category
Tags:
Preview:
Citation preview
ICT SYSTEMS
Inputs / Processing / Outputs
Inputs / Processing / Outputs
Inpute.g. Data Input
Any Computer System
Feedbacke.g. a printer problem
Processe.g. A computer program
OutputDisplaying information to the user
Inputs devices
Web camera
Image scanner
Keyboard
Graphics tablet Digital camera
Mouse
Barcode scanner
Output devices
Speakers
CNC Equipment
Monitors
Printers
Trafficlights
Processing
The main processor within a computer system is called the CPU
CPU – Central Processing Unit
CPU basic tasks:
• Storage of Data
• Carrying out instructions such as opening computer programs
• Performing arithmetic and logic operations
(performing calculations and taking decisions)
• Control the flow of input and output signals within the system
Storage
Memory cards
Tape storage
USB Portable memory
Floppy discs - less now
CD / DVD / Blu-ray
Hard drives
Networks
• The linking of 2 or more computers
• Giving the ability to share: InformationFilesHardware
(i.e. printers)
What do we mean by a Computer Network?
Most computers are linked into a network using a Network Interface Card (NIC) Card
Slots into an available PCI Sloton a Motherboard
Wired or Wireless
Peer 2 Peer
Sharing files & data
Wired or Wireless
Both computers have the ability to print
Wired or Wireless
Question:How do you use Peer 2 Peer today?
LAN & WAN
Hub:Linking allComputerstogether
File server:Focal point of network, may host files andprograms forall to use
All computers havethe ability to print
Wired or Wireless Connections
Connecting Networks
Router:Connecting 2
networks together
Business Communication Methods
Company
Customers
Suppliers
Externalcommunications
Internalcommunications
Directors
Managers
Office staff
Factory staff
Sales staff
Accounts
Email & EDI
Benefits of Email
Email Problems
A permanent record of each message is saved by both the sender and receiverSaves paper (except when offices still print them out!)The same message can be sent to a large group of people at onceSpeed, messages are almost instantaneous
Spam: unwanted advertising, be careful what you sign up for..Computer virus's: sent as attachments
Sender must have exact address, unlike normal post
A basic understanding of computer literacy is requiredAttaching documents
Electronic Data Interchange(EDI) is the structured transmission of data between organizations by electronic means. It is used to transfer electronic documents from one computer system to another, i.e. from one trading partner to another trading partner.
Intranets / Extranets
Intranets
Millions of computers exchanging information around the world, its publicly accessible side is known to us as the World Wide Web and contains billionsof pages of information.
Works the same way as the internet, except it is limited within a business or organisation. Information can be shared within it, but not accessed by any external source.
Extranets
Basically an Intranet, but with external access is given to specified users,usually through a password based system.
The Internet
Recommended