For an $8-$bit operand, specify the $8-$bit mask and the logical operator to perform the following operations. Bit positions are numbered $7-0,$ left to right.

a$.(5$ points$)$ Set all bits to $1.$

Logical Operator: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

Logical Mask: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

b$.(5$ points$)$ Complement bits $7,6,5,$ and $4.$ All other bits remain unchanged.

Logical Operator: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

Logical Mask: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

c$.(5$ points$)$ Clear bits $7,6,5,$ and $4$ to $0.$ All other bits remain unchanged.

Logical Operator: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

Logical Mask: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

d$.(5$ points$)$ Set bits $3,2,1,$ and $0$ to $1.$ All other bits remain unchanged.

Logical Operator: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

Logical Mask: $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$