A logical address is generated by the CPU while a program is running. The logical address is a virtual address as it does not exist physically, therefore, it is also known as a Virtual Address.
Physical Address identifies the physical location of required data in memory. The user never directly deals with the physical address but can access it by its corresponding logical address.
32. The size of each segment in 8086 is:
64 kb
24 kb
50 kb
16kb
Answer: 1. 64 kb
Explanation:
The size of each segment in 8086 is 64 kb.
33. The pin configuration of 8086 is available in the________:
40 pin
50 pin
30 pin
20 pin
Answer: 4. 20 pin
Explanation:
The pin configuration of 8086 is available in the 20 pin.
Intel 8086 is a 16-bit HMOS microprocessor. It is available in 40 pin DIP chip. It uses a 5V DC supply for its operation. The 8086 uses a 20-line address bus.
34. DIP stands for:
deal inline package
dual inline package
direct inline package
digital inline package
Answer: 2. dual inline package
Explanation:
DIP (Dual Inline Package) is an integrated circuit package with two rows of pins.
35. EA stands for:
effective address
electrical address
effect address
none of these
Answer: 1. effective address
Explanation:
EA stands for effective address. It is an absolute address that is either a direct address or has been computed by one of the addressing schemes such as augmenting relative addressing, or indexing.
36. BP stands for:
bit pointer
base pointer
bus pointer
byte pointer
Answer: 2. base pointer
Explanation:
BP stands for base pointer. The base pointer is conventionally used to mark the start of a function’s stack frame, or the area of the stack managed by that function. Local variables are stored below the base pointer and above the stack pointer.
37. DI stands for:
destination index
defect index
definition index
delete index
Answer: 1. destination index
Explanation:
DI stands for destination index. It is of 16 bits. It is used in the pointer addressing of data and as a destination in some string-related operations. Its offset is relative to the extra segment.
38. SI stands for:
stand index
source index
segment index
simple index
Answer: 2. source index
Explanation:
SI stands for source index. SI is the Source Index Register. Which is used to point to memory locations in the data segment addressed by DS. By increments, the contents of SI one can easily access consecutive memory locations.
39. ALE stands for
address latch enable
address light enable
address lower enable
address last enable
Answer: 1. address latch enable
Explanation:
ALE (Address Enable Latch) is the control signal which is nothing but a positive-going pulse generated when a new operation is started by the microprocessor. So when pulse goes high means ALE=1, it makes address bus enable, and when ALE=0, means low pulse makes data bus enable.
40. NMI stands for:
non-maskable interrupt
non-mistake interrupt
both
none of these
Answer: 1. non-maskable interrupt
Explanation:
NMI stands for non-maskable interrupt. All of the regular interrupts that we normally use and refer to by number are called maskable interrupts. The processor is able to mask, or temporarily ignore, any interrupt if it needs to, in order to finish something else that it is doing.
