RYAN

CST 111

Final Exam
December 2011
  • What is the highest digit used in "octal" numbers? 7
  • What is the highest digit used in "hexadecimal" numbers?65535
  • What is the highest digit used in "binary" numbers?1
  • What is the highest digit used in "decimal" numbers?9
  • What is the value of the highest digit in the base 5 number system?4
  • The rightmost digit of a number represents its value multiplied by the base raised to the __second
    • ______ power.
  • Convert the binary number 11011011 to decimal=.219
  • Convert the octal number 476 to binary=.100111110
  • Convert the hexadecimal number FF to decimal=.255
  • Convert the decimal number 255 to hexadecimal=.ff
  • Compute the ONES-complement of the following binary: 11011011 (Same as above.)
  • What ASCII character is represented by this number (ONES-complement of 11011011)?
  • Perform the following binary addition: 11001 + 1110011=10001100
  • Perform the following octal addition: 665 + 771=1656
  • Perform the following hexadecimal addition: ABC + ABC=1578
  • Signed-magnitude has how many representations of zero?two
  • How is the decimal value -273 represented in twos-complement ? (Show the bits.)
  • What negative number is represented in twos-complement by a (16-bit) word containing the following bits: 1111 0000 1111 0000
  • There are 3,143 counties in the USA.
  • How many bits are needed to represent each county with different code?
  • How is "information" different from "data"?Data is words,number's,item's.There just data into they are organized or processed"information is formed by data
  • Why do some 8-bit memory boards have nine sets of bits?one bit controls location
  • Give two examples of where "SECDED" might be use and explain why it is useful.
  • The set of wires through which data travels between components of a computer is called a _BUS
    • __. _______ is the collection of programs that provide the instructions that a computer carries out. The _____alu__________ performs basic operations in the central processing unit such as adding and subtracting, plus logical operations such as AND and OR.