A 16-bit processor has 16-bit wide instructions and a few internal registers. Every 16-bit instruction is encoded in a fixed format with one operation code of 7 bits and up to three operands. The operand can be an internal register and each operand is encoded by 3 bits. All the internal registers can be specified in an instruction using three bits. The correct statement(s) for this processor is/are _____.
Opcode Calculation
The processor uses 7 bits for the operation code (opcode).
The number of unique Opcodes that can be represented by n bits is calculated as $2^n$.
- Number of unique Opcodes = $2^7$
- Number of unique Opcodes = 128
Therefore, the processor can support 128 unique Opcodes. This aligns with Option B.
Register Calculation
Each operand is encoded using 3 bits, and these bits specify an internal register.
The number of unique internal registers that can be specified using n bits is $2^n$.
- Number of internal registers = $2^3$
- Number of internal registers = 8
Therefore, the processor has up to 8 internal registers. This aligns with Option C.
Conclusion
Based on the calculations:
- The processor can support 128 unique Opcodes (Option B is correct).
- The processor has up to 8 internal registers (Option C is correct).
The correct statements are B and C.
Important Questions from Instructions
A duck named Donald Duck says “All ducks always lie.”
Based only on the information above, which one of the following statements can be logically inferred with certainty?
Wanted Temporary, Part-time persons for the post of Field Interviewer to conduct personal interviews to collect and collate economic data. Requirements: High School-pass, must be available for Day, Evening and Saturday work. Transportation paid, expenses reimbursed.
Which one of the following is the best inference from the above advertisement?
Ms X will be in Bagdogra from 01/05/2014 to 20/05/2014 and from 22/05/2014 to 31/05/2014. On the morning of 21/05/2014, she will reach Kochi via Mumbai Which one of the statements below is logically valid and can be inferred from the above sentences?
Given below are two statements followed by two conclusions. Assuming that at least one film director exists and these statements are true, decide which one logically follows.
Statement:
I. All film stars are playback singers.
II. All film directors are film stars.
Conclusions:
I. All film directors are playback singers.
II. Some film stars are film directors.
In the following sentence, certain parts are underlined and marked P, Q and R. One of the parts may contain certain errors or may not be acceptable in standard written communication. Select the part containing an error. Choose D as your Answer: if there is no error.
The student corrected, all the errors (P), that the instructor marked (Q) on the answer book (R).
