In VHDL, a port is(a) a type of entity (b) a type of architecture(c) an input or output (d) a type of variable

Figure Q7 describes a Linear Feedback Shift Register (LFSR). Draw the equivalent schematic diagram of the system based on an off-the-shelf shift register, clearly showing the number of exclusive-OR gates needed to construct it. LIBRARY ieee; USE ieee.std logic_1164.all; entity lfsr is CLK, RESET: in STD LOGIC; Q: out STD LOGIC_VECTOR (5 downto 0) ); port ( end lfsr; architecture behavior of lfsr is begin process (CLK,RESET) begin if RESET='1' then Q <= "000001"; else Q <= ( Q(3) xor Q(2) xor Q(0) ) & Q(5 downto 1); end if; end process; end behavior;

Write a VHDL code to implement a shifter which shift right 4 bits of information.

Given the these minterms (4, 5, 6, 7, 8, 9, 10, 13, 14, 15), write a VHDL STATEMAENT for the function as a SOP. Please use this Entity Declaration in formulating the statement entity midterm is Port(A, B, C, D in STD_LOGIC; F: out STD_LOGIC); end midterm;

4. Design a logic circuit to compare 1-bit binary numbers, using NAND gates only.

Design N – bit add-sub unit using behavioral VHDL model