1. What is a Natural Number and its Symbol? 2. What is a Real Number and its Symbol? 3. What is an Integer and its Symbol? 4. What is a Rational Number and its Symbol? Positive Integer (N) Any number (R) Any whole number (Z) Can be represented in a Fraction (Q) 5. What is a Ordinal Number? Po...
1 what is a natural number and its symbol 2 what is a real number and its symbol 3 what is an integer and its symbol 4 what is a rational number and its symbol positive integer n any numbe
Geschreven voor
Computer Science
Computer Science
Computer Science
Alle documenten voor dit vak (760)
Verkoper
Volgen
stanleymwaniki
Ontvangen beoordelingen
Voorbeeld van de inhoud
Computer Science
Study online at
https://quizlet.com/_capwo7
1. What is a Natural Number
Positive Integer
and its Symbol?
2. What is a Real Number and
(N) Any number
its Symbol?
3. What is an Integer and its
Symbol? (R)
4. What is a Rational Number
and its Symbol? Any whole number (Z)
Can be represented in a Fraction (Q)
5. What is a Ordinal Number? Position in a list
6. What is a Cardinal Number? Size of list
7. What is Absolute Error? Difference between actual answer and
esti-
mate
8. What is Relative Error? absolute error/true value
9. How does parity bit Bit (1/0) is added at end of code.
work? (Odd/Even) Even parity - If there is an even
number of 1's, 0 is added
Odd parity - If there is an even number
of 1's, 1 is added
10. What is Majority Voting? 3 bits are sent that are the same as the
origi-
nal bit, the majority amount received
is taken as the original bit. 101 = 1.
Good as corrects errors as well as
spotting them.
11. What is Check digit? All numbers are added up, then the
digits of
1/
, Computer Science
Study online at
https://quizlet.com/_capwo7 the answer are added up, this is
repeated until you are left with 1 digit.
3+4+2+8 = 17
1+7 = 8
12. What is Bit/ Colour depth?
2/
, Computer Science
Study online at
https://quizlet.com/_capwo7
Amount of bits used to represent
all the colours of an image.
17 colours requires 5 bits.
13. What is Metadata? Data about an image/ other data.
-Time, Bit depth, Size
14. What is Analogue data? It is infinite and represented in wave
form
15. What is Digital data? Represented in binary, finite and can be
processed by a computer
16. Why are ADC's used? A computer needs to process analogue
signal
so data needs to be converted from
Analogue to Digital.
17. What is Nyquist's theorem? Sound should be sampled at double the
high-
est frequency.
18. What is Sampling? The process of converting Analogue
signals to Digital.
-Specific readings of amplitude
(Samples) are taken at regular intervals
and converted and stored in binary.
19. What happens when - Increase in file size
sample rate increases? - Increase in quality
20. What is Encryption? Converting Plaintext to Ciphertext to
make it
useless for anyone who intercepts it.
21. What is a Caeser Cipher? Moving the alphabet up and down or
replacing
letters with other letters.
22. What is a Vernam Cipher? Using a randomly generated key for
3/
, Computer Science
Study online at
https://quizlet.com/_capwo7
both en-
cryption and decryption. XOR gate is
used.
23. What does a Vernam key - Randomly generated
have to be? - Same length as plaintext
4/
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
√ Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, Bancontact of creditcard voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper stanleymwaniki. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €13,40. Je zit daarna nergens aan vast.
