Dram, Computer Engineering

Assignment Help:

DRAM consists of MOSFET's but the technique is to use the drain source capacitance to hold charge. If charge is present logic '1' is held, no charge logic '0'. As you know capacitors discharge themselves eventually and in order to maintain the data they require topping up. This process of topping up is termed refreshing. This involves supplying row address strobes (RAS) and column address strobes (CAS) to refresh each cell. Shown below are the pining details of a basic DRAM device.

By looking at the internal structure shown below, we can see that the design is more complex since it is required to refresh the cells.

1092_DRAM.png

Most modern processors have the required logic built in to refresh DRAM directly namely Pentium, 68060, Power PC etc.


Related Discussions:- Dram

Estimate the size of the state space, 1. The missionaries and cannibals pro...

1. The missionaries and cannibals problem. Three missionaries and three cannibals are on the left river bank, with a boat that can hold one or two people. If on either side of the

Classification of pipeline processors, Classification of Pipeline Processor...

Classification of Pipeline Processors In this part, we explain various types of pipelining that can be useful in computer operations. These types depend on the following factor

Convert the given S-R flipflop to a D-flip flop., Convert the given S-R fli...

Convert the given S-R flipflop to a D-flip flop. Ans: The Truth Table for S-R Flip-Flop is illustrated in Fig.(a) and truth table of D Flip-Flop is illustrated in Fig.(b)

Describe the external users of system, Q. Describe the External Users of sy...

Q. Describe the External Users of system? External Users: Modern information systems are now reaching beyond the boundaries of traditional business to involve customers and o

Ascii characters, Display how the value ASCII "MIRIAM" is stored in memory ...

Display how the value ASCII "MIRIAM" is stored in memory in Big Endian format starting at location 100 hexadecimal. Suppose that each memory location kept two ASCII characters.

Engineering and scientific software, Engineering and Scientific Software ...

Engineering and Scientific Software Engineering  and  Scientific  software  has  been  characterized  with "number crunching" algorithms. Application starts from astronomy t

Mpi communications, We have to use 3 MPI communications: Plz the code in C+...

We have to use 3 MPI communications: Plz the code in C++     1.  MPI_Scatter 2.  MPI_Alltoall 3.  MPI_Gather     **The length of the array will be determined by the user Fir

What does a socket having of, The combination of an IP address and a port n...

The combination of an IP address and a port number is known as a socket.

What is common control switching system, What is common control switching s...

What is common control switching system? Explain. Common Control Switching System: It is a functional block diagram of a common control switching system is demonstrated in figu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd