Answer Posted / narayan

Hi,

If you are not looking for a certificate and merely want knowledge, I recommend you watch the Embedded systems video of NPTEL on Youtube in their Education channel. You will perhaps find about 40 videos of about an hour duration. These channels come to the entire world free from the Professors of IIT. The Ministry of Human resources is championing this.

Explain me what are the rules followed by mutexes?

831

---

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

3455

---

Explain me what is the difference between microprocessor and microcontroller?

968

---

Explain the difference between a microcontroller and an embedded system?

956

---

What's the difference between a web server, web farm and web garden? How would your web application need to change for each?

893

---

Explain the concept of convention over configuration, and talk about an example of convention over configuration you have seen in the wild.

883

---

What's your experience with technical documentation?

907

---

What are the qualifiers in c?

884

---

Scope of static variables?

958

---

You've just been assigned to a project in a new technology how would you get started?

870

---

Can structures be passed to the functions by value?

904

---

How do the mvp, mvc, and mvvm patterns relate?

822

---

Tell me why is it better to use multi-threading polling then single threading model?

869

---

Describe a time when you collaborated with designers and engineers to deploy a new product. What was your role?

860

---

How do you identify hardware errors?

899

---