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1. STORAGE DEVICES

   • CD (optical storage)- 700mb
   • DVD (optical sotrage)- 4.7GB

2. SYSTEMS SOFTWARE

   • Operating systems
     • managing security
       • Provding a user interface
       • Managing computer memory
       • managing the hardware
       • allowing the hardware to communicate with the software
       • dealing with errors and using instructions
   • Utilities- designed to carry out small tasks to help the user with everyday tasks
     • scanning for viruses
     • encrypting files
     • compressing files
     • managing the hard disk e.g. defragmenting files
   • Drivers
     • A driver is a program that controls a device
       • Every device e.g. printer, disk drive, key board must have a driver program It acts like a translator between device and programs that use itand each device has its own set of speicalised commands that only the driver knows.

3. APPLICATION SOFTWARE