Відео

Depends. If you had to create it using this particular IC or U can assume this IC

In our ic trainer kit we have 12 inputs but we require 16 so for the remaining 4 inputs, we have connected them to gnd. So we made them a fixed input n that is zero zero. So u can do like wise. You can connect remaining 8 inputs to either gnd or VCC.

In electronics cascading means connecting two stages back to back that o/p of 1st stage connected to the i/p of the second stage. If we talk Particularly about 4 bit comparator ic 7485 ,it compares only 4 bit but in our 8 bit comparator practical we need to compare 8 bit so we need two ICS and we have to do cascading so that if the first stage “overflows” that data cascades into the next stage. In short we do cascading to have more than 4 bits to compare.

Sure

-- Design Name: -- Module Name: aluhnd - Behavioral -- Project Name: -- Target Devices: -- Tool versions: -- Description: -- -- Dependencies: -- -- Revision: -- Revision 0.01 - File Created -- Additional Comments: -- ---------------------------------------------------------------------------------- library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_ARITH.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; -- Uncomment the following library declaration if using -- arithmetic functions with Signed or Unsigned values --use IEEE.NUMERIC_STD.ALL; -- Uncomment the following library declaration if instantiating -- any Xilinx primitives in this code. --library UNISIM; --use UNISIM.VComponents.all; entity aluhnd is Port ( a : in STD_LOGIC_VECTOR (3 downto 0); b : in STD_LOGIC_VECTOR (3 downto 0); opc : in STD_LOGIC_VECTOR (3 downto 0); y : out STD_LOGIC_VECTOR (3 downto 0)); end aluhnd; architecture Behavioral of aluhnd is begin process(opc,a,b) begin --if(rising_edge(Clk)) then -- process(a,b,opc) --begin case opc is when "0000"=>y<=a; when "0001"=>y<=not a; when "0010"=>y<=b; when "0011"=>y<=not b; when "0100"=>y<=a and b; when "0101"=>y<=a or b; when "0110"=>y<=a nand b; when "0111"=>y<=a nor b; when "1000"=>y<=a xor b; when "1001"=>y<=(a+b); when "1010"=>y<=(a-b); when "1011"=>y<=(a+1); when "1100"=>y<=(a-1); when "1101"=>y<=(b+1); when "1110"=>y<=(b-1); when "1111"=>y<=a xnor b; when others=>y<="0000"; end case; --end if; end process; end Behavioral;

Glad it was helpful!

bro do u know any other channel to learn Data Structure accordingly SPPU SE ENTC