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- 1Define the terms bit, byte, kibibyte and mebibyte.1 bit = a single 0 or 1
1 nibble = 4 bits = half a byte
1 byte = 8 bits = 1 character of text
1 KIB = 1024 Bytes
1 MIB = 1024 KIB 0r 1024 x 1024 bytes
1 GIB = 1024 MIB
1 TIB = 1024 GIB - 2How is data processed by a computer?All instructions and data including graphics and sound are represented as millions of bits (0's and 1's) in order to be processed by the computer.
- 3Convert the binary 00001011 to a denary number.(1x1) + (1x2) + (1x8) = 11
- because two to the power of zero is 1, two to to the power of one is two and two to the power of 3 is eight, so when totalled, it equals to the number eleven - - 4convert the denary number 217 to the binary value.11011001
- no explanation :D - - 5what are the first 15 numbers of the hexadecimal system?0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
- 6convert denary 59 to its hexadecimal value.number of 16 = 3
3 x 16 = 48
59 - 48 = 11
11 in hexadecimal is B
so the answer is...
3B - 7What is the hexadecimal number 16 in denary?(1x16) + (6x1) = 22
- 8What is the hexadecimal number A in binary?A in denary is 10
10 in binary is...
00011010 - 9What are the rules of binary?Rules 1 : 0 + 0 = 0
Rules 2 : 0 + 1 = 1
Rules 3 : 1 + 0 = 1
Rules 4 : 1 + 1 = 0 carry 1
Rules 5 : 1 + 1 + 1 = 1 carry 1 - 10what is the result of this binary addition? 11110000 + 10011111110001111
There is 9 bits rather than 8 bits, so there is an overflow. - 11What is an overflow?It is the result of an addition that is too large for the number of bits the computer works with.
- 12Why is hexadecimal used, instead of binary?It's easy to convert between hex and binary
It is much simpler to remember
It is quicker to write or type
people are less likely to make an error - 13How do you identify if a binary is an odd or even number?If the rightmost bit is a 1, this means that the number is an odd number as that is the only value that is odd (it is one), therefore this number determines if the whole number is even or odd.
- 14Logical binary shift operationWhen the binary number is shifted the vacant bit spaces are filled with zero's.
A shift of one place doubles the binary value.
A binary shift of two places results in halving the numbers. - 15Effects of logical shiftLogical shift can very quickly multiply or divide numbers by a factor of two, but there can be a loss of accuracy when 1 bits are removed.
- 16What is signed and unsigned integer?A signed integer is a negative number whereas an unsigned integer is positive.
- 17What is two's complement?It is a method of storing both positive and negative integers in 8-bit binary.
- 18Two's complementIn two's complement number, if the leftmost bit is a zero, then the number works just as with a normal binary number, but if it is a 1 then the number equals to -128 therefore the numbers on the right will on to this number.
- 19How do you convert a negative denary number to binary?First work out the positive binary number, then flip all the bits (each 1 becomes 0 and vice versa), so
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- Karteikarten am Ohne Titel, erstellt von Meryem Kacmaz am 27/10/2022.
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