Synchronous interrupts are produced by the CPU control unit while executing instructions and are called synchronous because the control unit issues them only after terminating the execution of an instruction.
This interrupt according to temporal relationship with system clock.
Asynchronous interrupts are generated by other hardware devices at arbitrary times with respect to the CPU clock signals..
Maskable Interrupts - Those interrupts whose request can be denied by microprocessor.
eg- RST 1, RST2, RST 5, RST 6.5 etc..
Non maskable Interrupts - Interrupts whose request cannot be denied. eg -RST 4.5 or TRAP ,RESET IN.
. Periodic interrupts to cause a software task to be executed on a periodic basis.

Option-A TRUE: Implementing virtual memory is need to write large program
Option-B TRUE: It require more I/O
Option-C FALSE: Not more addressable memory available.
Option-D TRUE: Virtual memory is faster and easy swapping of process.

Implied → Specified implicitly in the definition of instruction
Immediate→ Registers which are in CPU
Register→ Specified in the register
Register Indirect→ Specified implicitly in the definition of instruction

Before 8085 microprocessors require +5V, -5V and 12V. In 8085 microprocessor need +5 volts supply only.

LDAX: Load accumulator indirect( This instruction copies the contents of that memory location into the accumulator. )
LHLD: Load H and L register direct ( This instruction loads the contents of the 16- bit memory location into the H and L register pair. )
LXI: Load register pair immediate( The instruction loads 16-bit data in the register pair designated in the operand.)
INX: Increment register pair by 1.( It will increment the register value by 1.)

Consider an example, where we have two entities Employee(whose primary key is R₁) and Department(whose primary key is R₂) and a department have many employees and each employee works in one department i.e. many to one relationship.

Candidate key is ab.
Since all a, b, c, d are atomic. So the relation is in 1NF.
Checking the FD's
a → c
b → d
We can see that there is partial dependencies. So it is not 2NF.
So answer is option (A).

TRUE: Persistence is the term used to describe the duration of phosphorescence. Phosphorescence is a process in which energy absorbed by a substance is released relatively slowly in the form of light.
TRUE: The control electrode is used to turn the electron beam on and off.
TRUE: The electron gun creates a source of electrons which are focused into a narrow beam directed at the face of CRT.

Scan converting a circle using Bresenham’s algorithm:
1 Initially X = 0 , Y = R and D = 3 – 2R

2. While (X < Y)

3. Call Draw Circle(X_c, Y_c, X, Y)

4. Set X = X + 1

5. If (D < 0) Then

6. D = D + 4X + 6

7. Else

8. Set Y = Y – 1

9. D = D + 4(X – Y) + 10

10. End If

11. Draw Circle(X_c, Y_c, X, Y) /* calling function call */

12. End While

Side effects of scan conversions are 1. Aliasing
2. Unequal intensity of diagonal lines
3. Overstriking in photographic applications
4. Local or Global aliasing