Hardware Interview Questions
What are the three main types of connection used by Bluetooth?
Single slave, Master slave, Scatternet
What is Piconet?
Answer -A collection of devices connected through Bluetooth technology in an adhoc fashion.
A network of devices connected in an ad hoc fashion using Bluetooth technology. A piconet is formed when at least two devices, such as a portable PC and a cellular phone, connect. A piconet can support up to eight devices.
Which technology is used in Bluetooth for avoiding interference?
Frequency hopping is the technology used in Bluetooth.
Which microprocessor accepts the program written for 8086 without any changes?
8088 is that processor.
What does EU do?
Execution Unit receives program instruction codes and data from BIU, executes these instructions and store the result in general registers. (bus interface unit (BIUs) means for interfacing a user with said network to transmit and receive message signals therebetween )
Which Segment is used to store interrupt and subroutine return address registers?
Stack Segment in segment register is used to store interrupt and subroutine return address registers
Which Flags can be set or reset by the programmer and also used to control the operation of the processor?
Trace Flag, Interrupt Flag, Direction Flag.
What is meant by cross-compiler?
A program runs on one machine and executes on another is called as cross-compiler
Give examples for Micro controller?
Z80, Intel MSC51 &96, Motorola are the best examples of Microcontroller.
What are the different functional units in 8086?
Bus Interface Unit and Execution unit, are the two different functional units in 8086.
Logic calculations are done in which type of registers?
Accumulator is the register in which Arithmetic and Logic calculations are done.
What is the position of the Stack Pointer after the POP instruction?
The address line is 02 greater than the earlier value.
What is the position of the Stack Pointer after the PUSH instruction?
The address line is 02 less than the earlier value.
Which is the tool used to connect the user and the computer?
Interpreter is the tool used to connect the user and the tool.
What is SIM and RIM instructions?
SIM is Set Interrupt Mask. Used to mask the hardware interrupts. RIM is Read Interrupt Mask. Used to check whether the interrupt is Masked or not.
Which Stack is used in 8086?
FIFO (First In First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.
What are the various segment registers in 8086?
Code, Data, Stack, Extra Segment registers in 8086.
What is the Maximum clock frequency in 8086?
5 Mhz is the Maximum clock frequency in 8086.
Give example for Non-Maskable interrupts?
Trap is known as Non-Maskable interrupts, which is used in emergency condition.
Give examples for Maskable interrupts?
RST 7.5, RST6.5, RST5.5 are Maskable interrupts
Which interrupts are generally used for critical events?
Non-Maskable interrupts are used in critical events. Such as Power failure, Emergency, Shut off etc.,
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