Flashcards
Computer science gcse revision
Cards in this deck (13)
- 1What does CPU stand for?Central Processing unit
- 2What is ROM?non-volatile memory which stores the boot up process
ROM - Read Only Memory - 3Where are instruction data and address info stored in the fetch,decode, execute cycle?Data - MDR (Memory Data Register)
Address - MAR (Memory Address Register) - 4How many instructions can be executed at once with 2 cores?2
- 5If 1 and 0 is inputted into an AND gate, what will be the output?0
- 6If 1 and 0 is inputted into an OR gate, what will be the output?1
- 7If 1 is inputted into a NOT gate, what will be the output?0
- 8What is the difference between flatfile and relational databases?relational databases are two tables linked together by foreign and primary keys which form relations and are usually easier to edit - whereas flatfile databases only have one table and can be more difficult to edit.
- 9What is pseudocode?A language used for decomposition of complex problems in order to find a simpler solution to code.
- 10What is hexadecimal?A shorthand for binary which goes
(1-9)-(A-F)
1 being 0001
9 being 1001
A being 1010
F being 1111 - 11What is the hexadecimal 2A short for in binary and in denary?binary - 0010 1010
denary - 32+10=42 - 12What is binary overflow?When the result of binary addition is too large to fit in a given data store (eg. if it is overflow on a byte it is over the value 1111 1111)
- 13What effect does sample size have on file size and sound quality?sample size: big ---> small
file size: big---> small
sound quality: better ---> worse
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- GCSE IT Flashcards on Computer science gcse revision, created by Alexandra Anderson on 21/10/2018.
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- Alexandra Anderson
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