Differences between DRAM and SRAM?
- 14 Answers
- 68190 Views
- Infosys, Intel, University, Wipro, I also Faced
- E-Mail Answers
Answer Posted / vimalanathan j
SRAM stands for Static Random Access Memory. In this to
store either 1 or 0 (i.e.) a single bit 6 transistors are
required. SRAM is the volatile memory. They can retain the
data until the system is powered off. As they use 6
transistor per bit they have faster access time and they
don't require to be periodically refreshed.
DRAM stands for Dynamic Random Access Memory. In this to
store a bit it requires 1 transistor and 1 capacitor.As
they use capacitor it requires to periodically refreshed.
This reduces the overall performance. But when compared the
size of SRAM and DRAM, SRAM is bigger than DRAM and on
costwise DRAM is economical
| Is This Answer Correct ? | 24 Yes | 11 No |
Post New Answer View All Answers
Design an 8 is to 3 encoder using 4 is to encoder?
Explain the working of Insights of a pass gate ?
If an/ap = 0.5, an/ap = 1, an/ap = 3, for 3 inverters draw the transfer characteristics?
What transistor level design tools are you proficient with? What types of designs were they used on?
Draw the Layout of an Inverter?
Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes with increasing Vgs.
How binary number can give a signal or convert into a digital signal?
What is the difference between cmos and bipolar technologies?
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;
What are the different measures that are required to achieve the design for better yield?
Explain the Charge Sharing problem while sampling data from a Bus?
What does it mean “the channel is pinched off”?
Give various factors on which threshold voltage depends.
Write a VLSI program that implements a toll booth controller?
Explain the operation considering a two processor computer system with a cache for each processor.
