Embedded Systems Interview Questions
Questions Answers Views Company eMail

Difference between 80286 and 80287

Mascot,

2 6698

In a processor these are 120 instructions . Bits needed to impliment this instructions [a] 6 [b] 7 [c] 10 [d] none

Wipro,

2 7147

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,

2 6527




Return address will be returned by function to

Wipro,

2 3468

load a mul a store t1 load b mul b store t2 mul t2 add t1 then the content in accumulator is

Wipro,

2 4696

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 6573

what is conductance and valence band?

1 3105

What is Fermi level?

5 4547

How does Vbe and Ic change with temperature?

Qualcomm,

1706

If the substrate doping concentration increase, or temperature increases, how will Vt change? it increase or decrease?

1124

what is Channel length modulation?

Intel,

1429

what is the doping?

5 3050

How does a pn junction works?

Wipro,

1 3578

What is the depletion region?

1 2875

Tell me the parameters as many as possible you know that used to character an amplifier?

837







Un-Answered Questions { Embedded Systems }

What is Noise Margin? Explain the procedure to determine Noise Margin?

952


Explain the working of differential sense amplifier?

3524


What is the critical path in a SRAM?

1540


Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

1185


Implement a function with both ratioed and domino logic and merits and demerits of each logic?

1979


If the substrate doping concentration increase, or temperature increases, how will Vt change? it increase or decrease?

1124


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

493


What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?

1771


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

2003


What was your role in the silicon evaluation/product ramp? What tools did you use?

2068


Implement F= not (AB+CD) using CMOS gates?

2246


Given a circuit, draw its exact timing response?

1873


What was your role in the silicon evaluation or product ramp? What tools did you use?

893


How can you construct both PMOS and NMOS on a single substrate?

2657


Are you familiar with the term MESI?

1114