Digital Information Systems

A digital information system consists of the following parts

• Hardware, software, input devices, output devices

• CPUs, software, Primary storage, Secondary storage.

• Hardware, people, software, processes, data.

• ROM, RAM, USB sticks.

Every digital system has the following components:

• Input devices, memory storages, CPUs, Output devices.

• Computer screens, emails, external hard drives, joysticks.

• Speakers, printers, ROM, Keyboards.

• Mouse, hearphones, RAM, Touch screens.

Sort the different devices into their correct type:

Groups:

(a) Input Devices

,

(b) Storage Devices

,

(c) Ouput Devices

• Speakers

• Rumble Packs

• Screens

• Memory Card

• Mouse

• Scanner

• Plotter

• Cload Storage

• Memory Stick

• Keyboard

• Internal Hard Drive

• Printer

• Touch Screen

• Microphone

• External Hard Drive

ROM – read-only memory is:

• is stored in various types of memory until it is required.

• stores the operating system, any application currently being used and the data required for that application.

• is created when two or more digital devices are connected by a modem.

• holds the information required to get the computer started.

RAM – random-access memory:

• is stored in various types of memory until it is required.

• stores the operating system, any application currently being used and the data required for that application.

• is created when two or more digital devices are connected by a modem.

• holds the information required to get the computer started.

What is primary memory?

• Internal memory.

• External memory.

• ROM

• RAM

What is secondary memory?

• Internal memory.

• External memory.

• ROM

• RAM

There are four main categories of software in a computer system:

• device for input of data, memory for data and information storage, central unit for processing of data, device for output of information.

• hardware, people, software, processes, data.

• operating system software, application software, utility software, programming languages.

• Point to point, Bus network, Star network, Ring network, Mesh network.