Why are program counter and stack pointer 16-bit registers?
- 6 Answers
- 51702 Views
- College School Exams Tests, HCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / bhumi
Program Counter (PC) and Stack Pointer (SP) are basically
used to hold 16-bit memory addresses.PC stores the 16-bit
memory address of the next instruction to be fetched.SP can
be used to temporarily store the 16-bit memory address as
well as data.So PC & SP are 16-bit registers.
| Is This Answer Correct ? | 218 Yes | 51 No |
Answer / mrinmoy karan
Program Counter (PC) and Stack Pointer (SP) are basically
used to hold 16-bit memory addresses.PC stores the 16-bit
memory address of the next instruction to be fetched.SP can
be used to temporarily store the 16-bit memory address as
well as data.So PC & SP are 16-bit registers.
| Is This Answer Correct ? | 7 Yes | 4 No |
Answer / abhinava
Program Counter (PC) and Stack Pointer (SP) are basically
used to hold 16-bit memory addresses.PC stores the 16-bit
memory address of the next instruction to be fetched.SP can
be used to temporarily store the 16-bit memory address as
well as data
So, PC & SP are 16-bit registers.
| Is This Answer Correct ? | 7 Yes | 5 No |
Answer / venki
8 bit address can only locate/address 256 memory locations. 16 bit address can locate up to 64kb. Even if 8 bit system can have more than 256 bytes of Ram/Rom/Flash (say whatever). And hence the need of 16 bit PC & SP instead of 8 bits. Data registers or data bus could be just 8 bits still.
| Is This Answer Correct ? | 5 Yes | 10 No |
Answer / riya roy palamattam
becoz 8085 microprocessors are 16 bit of address.and pc and sp adressIf the program counter and stack pointer were only 8-bits wide, the processor would be able to address only 256 address locations.
| Is This Answer Correct ? | 1 Yes | 7 No |
Why memory width is not 16-bit? In stead of having 8-bit (same as 8085)?
Give an example of a combined addressing mode instruction?
What do you mean by wait state? What is its need?
What are the types of interrupts from type 0 to 4
State the order of interrupts priority wise (lower to higher)?
Byte wise what are the lengths of call and ret instructions?
Explain about the classification of instruction operations
What is the main difference between 8085 and 8086 processors?
What is the software interrupts of 8085?
What is the operating frequency of 8085?
What is general purpose registers in 8086?
How can you increase ports of a microprocessor?
86 Family 
