Answer / nehru

cmos design combination of both pmos and nmos.pmos is pull
up network.nmos pull down network.A TRANISTOR IS CONNECTED
SERIES WITH B TRANSISTOR.THE SERIES COMBINATION OF BOTH
A AND B TRANSISTOR CONNECTED PARALLEL WITH C TRANSISTOR(IN
PULL DOWN CKT).THEN APPLY DUALITY PROPERTY TO PMOS.THEN
FINAL OUTPUT IS COMPLEMENTED BY CMOS INVERTER.THIS FUNCTION
IMPLEMENTED IN DIFFERENT LOGICS
1.CMOS LOGIC
2.C2 MOS LOGIC
3.NP LOGIC
4.DYNAMIC LOGIC
5.PASS TRANSISTOR LOGIC
6.DOMINO LOGIC
7.DIFFERENTIAL CASCADE VOLTAGE SWITCH LOGIC
8.PSUEDO NMOS LOGIC

Answer / radhika

CMOS gate consists of both NMOS and PMOS.
Two NMOS ,a and b are connected in series with each other and their series combination is in parallel with c named nmos.For PMOS ,a and b are connected in parallel with each other and this parallel combination is in series with c named pmos.Output is taken from PMOS and NMOS junction.

What are the different ways in which antenna violation can be prevented?

0 Answers  

---

Suppose you have a combinational circuit between two registers driven by a clock. What will you do if the delay of the combinational circuit is greater than your clock signal? (You can't resize the combinational circuit transistors)

6 Answers  

---

What is polymorphism? (C++)

2 Answers   Intel,

---

For a 0.18um and 0.8um technology MOSFET, which has a higher cutoff frequency?

2 Answers  

---

What is the ideal input and output resistance of a current source?

0 Answers  

---

Insights of an inverter. Explain the working?

1 Answers   Intel,

---

Are you familiar with the term snooping?

1 Answers   Intel,

---

Need to convert this VHDL code into VLSI verilog code? LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; ----using all functions of specific package--- ENTITY tollbooth2 IS PORT (Clock,car_s,RE : IN STD_LOGIC; coin_s : IN STD_LOGIC_VECTOR(1 DOWNTO 0); r_light,g_light,alarm : OUT STD_LOGIC); END tollbooth2; ARCHITECTURE Behav OF tollbooth2 IS TYPE state_type IS (NO_CAR,GOTZERO,GOTFIV,GOTTEN,GOTFIF,GOTTWEN,CAR_PAID,CHEATE D); ------GOTZERO = PAID $0.00--------- ------GOTFIV = PAID $0.05---------- ------GOTTEN = PAID $0.10---------- ------GOTFIF = PAID $0.15---------- ------GOTTWEN = PAID $0.20--------- SIGNAL present_state,next_state : state_type; BEGIN -----Next state is identified using present state,car & coin sensors------ PROCESS(present_state,car_s,coin_s) BEGIN CASE present_state IS WHEN NO_CAR => IF (car_s = '1') THEN next_state <= GOTZERO; ELSE next_state <= NO_CAR; END IF; WHEN GOTZERO => IF (car_s ='0') THEN next_state <= CHEATED; ELSIF (coin_s = "00") THEN next_state <= GOTZERO; ELSIF (coin_s = "01") THEN next_state <= GOTFIV; ELSIF (coin_s ="10") THEN next_state <= GOTTEN; END IF; WHEN GOTFIV=> IF (car_s ='0') THEN next_state <= CHEATED; ELSIF (coin_s = "00") THEN next_state <= GOTFIV; ELSIF (coin_s = "01") THEN next_state <= GOTTEN; ELSIF (coin_s <= "10") THEN next_state <= GOTFIV; END IF; WHEN GOTTEN => IF (car_s ='0') THEN next_state <= CHEATED; ELSIF (coin_s ="00") THEN next_state <= GOTTEN; ELSIF (coin_s="01") THEN next_state <= GOTFIV; ELSIF (coin_s="10") THEN next_state <= GOTTWEN; END IF; WHEN GOTFIF => IF (car_s ='0') THEN next_state <= CHEATED; ELSIF (coin_s = "00") THEN next_state <= GOTFIF; ELSIF (coin_s ="01") THEN next_state <= GOTTWEN; ELSIF (coin_s = "10") THEN next_state <= GOTTWEN; END IF; WHEN GOTTWEN => next_state <= CAR_PAID; WHEN CAR_PAID => IF (car_s = '0') THEN next_state <= NO_CAR; ELSE next_state<= CAR_PAID; END IF; WHEN CHEATED => IF (car_s = '1') THEN next_state <= GOTZERO; ELSE next_state <= CHEATED; END IF; END CASE; END PROCESS;-----End of Process 1 -------PROCESS 2 for STATE REGISTER CLOCKING-------- PROCESS(Clock,RE) BEGIN IF RE = '1' THEN present_state <= GOTZERO; ----When the clock changes from low to high,the state of the system ----stored in next_state becomes the present state----- ELSIF Clock'EVENT AND Clock ='1' THEN present_state <= next_state; END IF; END PROCESS;-----End of Process 2------- --------------------------------------------------------- -----Conditional signal assignment statements---------- r_light <= '0' WHEN present_state = CAR_PAID ELSE '1'; g_light <= '1' WHEN present_state = CAR_PAID ELSE '0'; alarm <= '1' WHEN present_state = CHEATED ELSE '0'; END Behav;

0 Answers  

---

Why does the present vlsi circuits use mosfets instead of bjts?

0 Answers  

---

Why is Extraction performed?

1 Answers   Intel,

---

What does it mean “the channel is pinched off”?

0 Answers  

---

Draw the Cross Section of an Inverter? Clearly show all the connections between M1 and poly, M1 and diffusion layers etc?

0 Answers   Intel,

---