Types defined in Standard Package

• Type BIT

  • 2 logic value system (‘0’, ‘1’)
    signal a_temp : bit;
    
  • BIT_VECTOR array of bits
    signal temp : bit_vector(3 downto 0);
    
    signal temp : bit_vector(0 to 3) ;

• Type BOOLEAN

  • (false, true)

• Integer

  • Positive and negative values in decimal
    signal int_tmp : integer; -- 32 bit number
    
    signal int_tmp1 : integer range 0 to 255; --8 bit number

• Note: Standard package has other types

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