draw on paper is accepted

Arithmetic Shift Left Design a circuit (called ASL) that takes a 4-bit input (A3-A0, where AO is the least significant bit) and produces a 4-bit output (B3-BO, where BO is the least significant bit), such that each bit of the input is shifted to the left by one place. The left-most bit is discarded, and the new right-most bit will be zero (O). Note: You should be able to design this circuit directly by drawing it. There should be no need for truth tables, though you can do it that way if you prefer