QUESTION $11$

Write the following expression in postfix $($Reverse Polish$)$ notation.

$x=\frac{A^{**}{B}^{**}C+D^{**}(E-F^{**}G)}{H^{**}|+J**K-L}$

$AB**C^{**}DE{F}^{**}-G^{**}+H{I}^{**}JK**+L-I$

$A{B}^{**}{C}^{**}DEF{G}^{**}***+H{I}^{**}J{K}^{**}+L-I$

ABC$**DEFG****+H{I}^{**}JK**+L-I$

$AB**CD**EFG******HI**JK**L+-I$

QUESTION $12$

Copy of

Same Problem Statement for $12,13,14,15,16$

A digital computer has a memory unit with $32$ bits per word. The instruction set consists of $200$ different

operations. All instructions have an operation code part $($opcode$)$ and two address fields: one for a memory

address and one for a register address. This particular system includes $120$ general$-$purpose, user$-$

addressable registers. Each instruction is stored in one word of memory.

How many bits are needed to specify the register?

$2$

$4$

$6$

$7$

$8$

$9$

$10$