Binary arithmetic 0.0 / 5 ? ComputingRepresenting dataGCSEAQA Created by: lbreretonCreated on: 01-12-22 14:27 How can you quickly tell if a binary number is odd or even? Even = end in 0 Odd = end in 1 1 of 18 convert 89 to decimal 0101 1001 2 of 18 What number system does hexademical use? a base of 16 3 of 18 what is 10 in hexadecimal? A 4 of 18 What is F in decimal? (denary) 15 5 of 18 How do you convert Hex to decimal? Multiply the left by 16, add the right 6 of 18 what is the hexadecimal 27 in decimal? 2 x 16 = 32 32+7 = 39 7 of 18 How to you convert Decimal to Hex? Divide the decimal by 16, the remainder becomes last digit. 8 of 18 What is decimal 44 in hex 2C 9 of 18 How do you convert 8-bit binary to hexadecimal? Divide the number into two convert each nibble into hex value rejoin 10 of 18 How do you convert Hex to Binary? Split the two characters convert into binary rejoin 11 of 18 What is hex 21 in binary? 2 = 0010 , 1 = 0001 21 = 0010 0001 12 of 18 What are the positives of using Hex? - simpler to remember - quicker to write - less likely for human error - easier to convert - DOES NOT TAKE UP LESS STORAGE 13 of 18 What is an overflow error? When the result of an addition is too large for the number of bits. 14 of 18 What is a left binary shift? moves all the bits one place to the left 15 of 18 What is the effect of a binary shift? to divide or multiply a binary number 16 of 18 What does a left binary shift do? it multiplies the number by 2 for each shift made. 17 of 18 Why do we divide/multiply by 2 in binary shifts? because we are in base 2 18 of 18
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