State two benefits of using robots
State the areas where infra-red radio waves are used KCSE 2018
List three characteristics of Internet Protocol version 6 (IP6).
Describe what is meant by a clock speed of 3.8 GHz.
State what is meant by Computer Aided Design (CAD).
Give three different applications that make use of CAD.
Name three specialist input/output devices used in CAD.
– software that can be used to design new products/amend existing products
– makes use of features such as 2D, 3D, wire frames, library of parts, links to CAM
Give three different applications that make use of CAD.
– aerospace
– architecture
– designing cars
– designing consumer goods
– chemical/nuclear plant design
– designing electronic circuit boards
– ergonomic design
– landscape/garden design
Name three specialist input/output devices used in CAD.
– large monitor/screen with hi-res
– touch screen
– plotter
– space mouse/space ball/4D device
– 3D glasses (in some applications)
– light pen
– graphics tablet
– 3D printer
– 3D scanner
Describe the purpose of the control unit (CU) within this computer.
Distinguish between transcription and transposition types of errors and give an example of each (4mks)
Transcription Errors: Transcription errors involve the incorrect entry of data due to mistakes made during the copying or typing process. These errors can occur when transferring information from one source to another.
Transposition Errors: Transposition errors specifically refer to errors where the order of characters or digits is accidentally reversed or swapped. This can happen during manual data entry or when processing information.
State advantages of hardcopy output
State THREE reasons why binary is used in developing digital electronic systems (3marks)
Name two other input/output devices used at the POS terminal apart from keyboard and barcode reader and give a use for each device.
device: beeper/loud speaker
use: to indicate barcode correctly read/error in reading barcode
device: (LCD) screen/monitor
use: to show prices and other information about goods
device: touch screen
use: to show prices and other information about goods/to select items that need to be
weighed/identified
device: weighing machine
use: to find weight of loose items (e.g. fruit) to enable pricing
device: (magnetic) card reader/CHIP and PIN reader
use: to read customer’s debit/credit card/enable customer to pay for goods using a
credit or debit card
device: printer
use: to print receipts
Distinguish between a file and a folder
A file is a collection of related data given a unique name while a folder is named storage location on a storage media that contains related files
State the advantages and disadvantages of the command-line interface
Advantages
Disadvantages