1.1.3 Flashcards
What is an input device?(1)
A device that can accept data from user to computer.
What is an output device?(1)
Device that transmits data to user from computer
GIve 3 examples of an input device (3)
Any 3 input devices (i.e Keyboard-Webcam-Barcode readers etc.)
GIve 3 examples of an output device (3)
Any 3 output devices (i.e Speakers-Printers-Projectors etc.)
What kind of device is a touch screen?(2)
Both an input and an output device.
Give 4 performance factors for both input and output devices.(4)
Speed/Accuracy/Cost/Relevance to task.
What is used to read from and write to optical devices?(1)
Lasers
How is binary information represented in optical devices?(4)
Pits and Lands;Pit represents 0 and Land represents 1.
What are 3 types of optical devices?(3)
CD/DVD/Blu-Ray
Which out of CD/DVD/Blu-Ray has a higher storage capacity?(1)
Blu-Ray
How is binary information represented in magnetic devices?(2)
2 magnetic states;1 polarised and 1 unpolarised.
What is the most common type of magnetic storage device?(1)
Hard disk drive
How is binary information stored in Flash storage devices?
Logic gates are used to store electrical charge in one of two states:high or low (1 or 0)
Is flash storage volatile or non-volatile?(1)
Non-volatile
What does non-volatile storage mean?(1)
Storage that can be retained after powering computer down
Give one advantage and one disadvantage of Solid State Drives compared to HDD (2)
Advantages: any from light and portable/no moving parts/more durable/higher data transfer rates Disadvantages: any from cost/limited lifespan
What are the 2 types of primary storage?(2)
RAM and ROM
What does RAM stand for?(1)
Random Access Memory
What does ROM stand for?(1)
Read Only Memory
What is the RAM used for?(1)
Used to store data and programs that the computer is currently using
What is the ROM used for?(1)
Useful for storing fixed sequences of instructions like a computer’s startup
Is the RAM volatile or non-volatile?(1)
Volatile
Is the ROM volatile or non-volatile?(1)
Non-volatile
ROM cannot be modified. True or False?(1)
TRUE
What is virtual storage?(2)
Storage that stores information remotely so that it can be accessed by any
What is a disadvantage of virtual storage?(1)
Cost or limitation of user’s network speed.
