Storage

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

 a) memory which resides on the main circuit board consists of RAM and ROM chips.
 b) Random Access Memory (RAM) is immediately available to the processor and holds data and instructions , while processing takes place. It also holds that is waiting to be output or stored in a secondary storage device. Data can be read from and written to RAM. RAM is , limited and expensive.
 c) chips hold data and instructions necessary for starting up the computer when it is switched on. Data can only be read from chips. these chips are non-volatile.
 d) PROM and EPROM are variations of the chip which allow data to be added, once in the case of PROM and many times for EPROM.
 e) A is the smallest unit of storage.
 f) A is made up of a combination of eight bits, and has the storage power to represent written character.
 g) A is the amount of bits a computer can process in one operation. The word length is the number of in a word.
 h) One kilobyte (KB) is approximately bytes, one megabyte is approximately bytes and one gigabyte is approximately bytes.
i) Secondary storage devices store data and instructions , to be used when required.
j) Magnetic tape, magnetic disk (floppy disk and hard disk), optical disk (CD-ROM, CD-R, CD-RW and DVD), USB drives and flash memory are storage devices..
k) are thin but rigid, inflexible disks made of highly polished metal with a storage capacity from around 20 GB to 1 TB and more. The hard drive usually stores applications software (word processor, database, spreadsheet, etc.), and the .
l) hard drives can be easily removed and connected to another computer.
m) a disk means writing electronic information on the disk so that the computer can recognise the disk as a valid storage device and data can be stored.
n) A disk can be used to store small files and provides direct access to data stored. It has a capacity of 1.44 MB.
o) disks include CD-ROM, CD-R, CD-RW and DVDs. They provide direct access to data stored.
p) memory technology is electronic memory that store data as electrons, based on EEPROM (Electrically Erasable Programmable Read Only Memory) technology.