1.2 FEATURES OF DIGITAL DEVICES

Question 1

PERFORMANCE

Answer 1

High performance means jobs and tasks are performed quickly. Speed of performance is determined by speed of software. Software instructions are carried out by the processor. Faster processor = better performance.

Question 2

PROCESSOR

Answer 2

1 or more CPUs carrying out software instructions.

Question 3

STORAGE

Answer 3

Files and programs are stored here. More storage means you can have more files amd programs.

Question 4

USER INTERFACE

- Command line interface
- Menu - driven
- Graphical
- Voice
- Gesture

Answer 4

Give commands through here

Question 5

COMMAND LINE INTERFACE

Answer 5

Text instructions, typed precisely. Computer system provides results. Recognizes certain commands. OLD - LITTLE STORAGE - LITTLE MEMORY REQUIRED.

Question 6

MENU - DRIVEN INTERFACE

EG - ATM

Answer 6

Displays list of options, triggers command, then displays another list. EASIER TO USE - TIME CONSUMING.

Question 7

GRAPHICAL USER INTERFACE

EASIEST TYPE!!

Answer 7

Controlled by pointer. Takes more memory and storage.

Question 8

VOICE INTERFACE

EG - CORTANA

Answer 8

Spoken commands. Voice recognition matches spoken words with library to find a match. REQUIRES INTERNET - MIGHT NOT UNDERSTAND - HAND-FREE OPERATION - CAN IMPROVE ROAD SAFETY.

Question 9

GESTURE INTERFACE

Answer 9

Control device with fingers on screen. Zoom in/out. Touch screen.

Question 10

CONNECTIVITY

Answer 10

You can share data by connecting using wired/wireless. Can be used to update software, backup files, play media between devices.

Question 11

FEATURES OF WIRED CONNECTIVITY

Answer 11

Faster and reliable. Additional cost, mess, inconvenience, hazards.

Question 12

MEDIA SUPPORT

EG - FLASH MEMORY CARDS, DvDs, MICROSD

Answer 12

Devices can read and write data to different medias. Adapters can be connected to provide connectivity to external devices where media can NOT be inserted.

Question 13

ENERGY CONSUMPTION

Answer 13

Devices require energy (electricity) to work. Lower energy consumption means longer battery life.

Question 14

EXPANSION CAPABILITIES

Answer 14

Allow installation of additional comppnents and expansion slots to make use of flash memory cards. Systems can expands with ports (eg, USB ports, allows extra devices connected called peripheral devices).

Question 15

WHAT ARE THE TYPES OF SECURITY?

Answer 15

• Software security
• Physical security

Question 16

SOFTWARE SECURITY

Answer 16

Prevent unauthorized access to data:
PASSWORD
PIN (Personal Identification Number):
- Pattern pin = 389,112 combos
- Number pin = 10,000 combos
BIO METRIC SCANNERS

Question 17

PHYSICAL SECURITY

EG - KENSINGTON SECURITY LOCK - attach cable form computer to stationary object like a table.

Answer 17

Prevent theft. Some connect to ports on device with special screws to secure locks into place.