Q. In one's complement 8 bit representation 11111111 represents

View solution

Q. The operating modes of 8255 A are called

View solution

Q. Which of the following is type declaration statement in C?

View solution

Q. The number of categories in which registers are classified in μP are

View solution

Q. In the expression b = 2.1 / 1.2 * 3.1 + 3 / 7.1 * 6 which operation would have the first priority in C?

View solution

Q. Consider the instructions

1. MOV M, B
2. OUT 4
3. LDAX

Which of the above require memory write cycle?

View solution

Q. Read the following statements about address space in microprocessors

1. An address space is a set of all possible addresses which can be generated by a microprocessor.
2. Each address in the address space allows a designer to provide at least one memory or I/O location in the system.
3. Two types of address spaces are memory and I/O address space.
4. Some micro processors have only one type of address space.

Which of the above are correct?

View solution

Q. In 8085

View solution

Q. Some words like READ, WRITE, STOP etc. cannot be used as variable names in Fortran 77.

View solution

Q. Which of the following 8085 instructions do not effect CY flag?

View solution

Q. A compiler converts a high level computer program into machine language program.

View solution

Q. In 8085, the pairing of registers B, C, D, E, H, L is

View solution

Q. Internet is a worldwide network of computers where most of the information is freely available.

View solution

Q. A 37 bit mantissa has an accuracy of

View solution

Q. In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

View solution

Q. In 8085, the pins for SID and SOD are

View solution

Q. Assertion (A): Each memory chip has its own address latch.

Reason (R): ALE signal comes out of microprocessor 8085 and goes to memory chip.

View solution

Q. The number of interrupt lines in 8085 is

View solution

Q. If KMT = 100, LITRES = 5.0, PCOST = 28.0 and OPCOST = 70.0 what will be the result of the following FORTRAN 77 program?

INTEGER KMT
REAL LITRES, PCOST, OPCOST, PKCOST READ *, KMT,
LITRES, PCOST, OPCOST, PKCOST
KMPL = KMT/LITRES PKCOST = (PCOST * LITRES + OPCOST)/ KMT

View solution

Q. A real number consists of

View solution