Created by Raeesa Shah
over 7 years ago
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Question | Answer |
What does a processor do? | Controls all the functions of the device, it is in all digital devices |
What is internal memory? | It stores programme instructions and data, usually measured in bytes |
show the hierarchy of memory starting from 1 byte | byte → kilobyte → megabyte → gigabyte → terabyte (1000x bigger each time) |
What type of devices are digital devices? | Storage devices |
Why aren't hard disk drives used in portable devices? | Because they contain moving parts and can easily be damaged |
Flash memory is a peripheral that is ideal for portable digital devices, why is this? | • It doesn't lose data when it's turned off • Has no moving parts so not easily damaged (solid state) • It is removable and can transfer data between devices |
A secure digital (SD) card is a type of flash memory, how much can they store? | Up to 4GB |
Describe two details about a micro SD card | • They are smaller than SD cards and therefore used for smaller devices • They are a type of flash memory |
Describe a USB flash drive (memory stick) | • it plugs into the USB port • it can store up to 256GB |
What is an SDXC (extended capacity) card? | A type of flash memory that can store up to 2TB |
How much can an SDHC (high capacity) card store? | Up to 32GB |
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