Embedded Systems AllOther Interview Questions
Questions Answers Views Company eMail

In 8085 microprocessor READY signal does.which of the following is incorrect statements [a]It is input to the microprocessor [b] It sequences the instructions

Wipro,

4 7357

Design a circuit for A + abs(B) = C, where A and B are 4 bits wide and 2?s complement representation

Qualcomm,

1 6742

Design a circuit to detect when 3 and only 3 bits are set out of 8 bits.(eg. o0101100)

RIM, Qualcomm,

13 17742




What is Difference between CAN and GMLAN

GM General Motors,

2 14754

whether the mulitasking and multiprocessing are same or not.

10 6707

Is tasklets or workqueues or softirqs are scheduled by the scheduler?

2 8902

wat are the different rtos available? wat is the difference beetween RTOS ans OS

LG Soft,

8 12802

What is mutex precisely used for?

2 5557




hi i want to learn embedded system course. can anyone tel me which training center is best in chennai to learn embedded system? plz help me

1 3281

what is plc system

3 4320

IS 8085 an embedded system?

4 8987

what is the command/instruction in ARM that does not do anything or does not execute any instruction ? (except NOP instruction)

Bosch,

2083

what is difference between micro processor & micro controller ?

Bosch,

8 8429

what is Page Fault or Page thrashing ?

Broadcom,

3 10122

Can we use semaphore or mutex or spin lock in interrupt context in linux kernel ?

Broadcom,

3 16432


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Un-Answered Questions { Embedded Systems AllOther }

what is the command/instruction in ARM that does not do anything or does not execute any instruction ? (except NOP instruction)

2083


How can to check the working of a sensor deployed in a project?

768


Program to print the 32 number in form of binary, Hexa and ASCI.

1849


PROVIDE ME NOTES ON EMBEDDED TCHNLOGY

1883


This program is in verilog and need help to get it working correctly. This is the code i have so far. Please help. Simple testbench would be great. Thanks\ 'define vend_a_drink {D,dispense,collect} = {IDLE,2'b11}; module drink_machine(nickel_in, dime_in, quarter_in, collect, nickel_out, dime_out, dispense, reset, clk) ; parameter IDLE=0,FIVE=1,TEN=2,TWENTY_FIVE=3, FIFTEEN=4,THIRTY=5,TWENTY=6,OWE_DIME=7; input nickel_in, dime_in, quarter_in, reset, clk; output collect, nickel_out, dime_out, dispense; reg collect, nickel_out, dime_out, dispense; reg [2:0] D, Q; /* state */ // synopsys state_vector Q always @ ( nickel_in or dime_in or quarter_in or reset ) begin nickel_out = 0; dime_out = 0; dispense = 0; collect = 0; if ( reset ) D = IDLE; else begin D = Q; case ( Q ) IDLE: if (nickel_in) D = FIVE; else if (dime_in) D = TEN; else if (quarter_in) D = TWENTY_FIVE; FIVE: if(nickel_in) D = TEN; else if (dime_in) D = FIFTEEN; else if (quarter_in) D = THIRTY; TEN: if (nickel_in) D = FIFTEEN; else if (dime_in) D = TWENTY; else if (quarter_in) 'vend_a_drink; TWENTY_FIVE: if( nickel_in) D = THIRTY; else if (dime_in) 'vend_a_drink; else if (quarter_in) begin 'vend_a_drink; nickel_out = 1; dime_out = 1; end FIFTEEN: if (nickel_in) D = TWENTY; else if (dime_in) D = TWENTY_FIVE; else if (quarter_in) begin 'vend_a_drink; nickel_out = 1; end THIRTY: if (nickel_in) 'vend_a_drink; else if (dime_in) begin 'vend_a_drink; nickel_out = 1; end else if (quarter_in) begin 'vend_a_drink; dime_out = 1; D = OWE_DIME; end TWENTY: if (nickel_in) D = TWENTY_FIVE; else if (dime_in) D = THIRTY; else if (quarter_in) begin 'vend_a_drink; dime_out = 1; end OWE_DIME: begin dime_out = 1; D = IDLE; end endcase end end always @ (posedge clk ) begin Q = D; end endmodule

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