3.EMBEDDED HARDWARE DESIGN AND DEVOLEPMENT
1)In an embedded application ________are used for either switching or amplication purpose.
Ans)transistors
2)a compatible interface between two different ic chips can be obtained by sing digital electronics with_____--logic.
Ans)glue
3)a buffer increases the____capabilitty of the logic ckt.
Ans)driving
4)in electronic ckts decoders are mainly used for_______ and_________
Ans)address decoding,chip select signal generator
5)the digital ckts whose output depends on both the present and past inputs are called ______-ckts
Ans)sequential
6)by combining the j and k inputs of a j_k flipflop we get____-flipflop
Ans)toggle
7)the joining of two or more strings is_______
Ans)string concatination
8)the process of arranging the structure elements in memory in such a way that execution speed increases is called as__________________
Ans)structure padding
9)an each pre_processor derective starts with the__symbol and ends ______________a semicolon.
Ans)#,without
10)the bitwise xor operation is used for ________bits in embedded applications.
Ans)toggling
11)the recursive function can be converted into iterative method is called (b )
a)concatenation b)unrolling
c)linking d)none of the above
12)string length refers to the number of ________________expect null terminator ( a)
a)character b)letters
c)integers D)all of the above
13)copying of a string into another string operation can be performed by ____c___----function.
a)strcmp() b)strcopy()
c)strcpy() d)strcat()
14)if the track routing and component placement are done on both sides of pcb then it is called as__________________
Ans)
15)_______is a popular eda tool for pcb design
Ans)double side mounting pcb
16)resistor is a __________________liming device
Ans)current
17)logic gates types are________________
Ans)AND OR NOT
18)what is the function of multiplexer?
Ans)transmiiting a large nmber of information units over a small number of channels are lines.
19)a decoder with enable input act as______________
Ans)demultiplexer
20)clock is required in _______________________---ckts.
Ans)synchronous sequential ckts.
4.RTOS BASED EMBEDDED SYSTEM DESIGN
1)____________act as an abstraction layer between system resources and user applications.
Ans)kernel
2)_ and_ are the two types of kernals.
Ans)monolithic,micro
3)the interrupt of timer is called as____________
Ans)timer tick
4)a hard real time system emphasizes the principal____
Ans)thread
5)a single sequential flow of control in a process is called _____________
Ans)a late answer is a wron g answer
6)the ability of operating system to have multiple programe in memory which are ready for execution is called_____________
Ans)multiprogramming
7)if the process is_-then it switches to ready state from running state.
Ans)preempted
8)in___________sheduling the last enterd process is serviced first.
Ans)lcfs or lifo
9)_______________is the primary inter task communication mechanism under kernel.
Ans)message queue
10)streame sockets use____________to establish a reliable connection.
Ans)TCP
11)an alternative form of message queue is_______________
Ans)mailbox
12)the condition in which the process does not get the sources needed to continue its execution for a long time____________________
Ans)starvation
13)the________________-technique uses a lock variable for implementing mutual exclution.
Ans)busy waiting
14)the act of concurrent execution of multithread under an operating system is called__________
Ans)multithreading
15)device driver is a piece of software that act as bridge between the___ and_____
Ans)hardware and operating system
16)ROM stands for _______________
Ans)read only memory
17)RAM stands for______________
Ans)random acess memory
18)RTOS stands for________________-
Ans)real time operating system
19)_______is an heart of an embedded system.
Ans)kernel
20)FIFO stands for____________---
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