What is a DRAM in technology?
What is a DRAM in technology?
DRAM stands for “dynamic random access memory,” and it’s a specific type of RAM (random access memory). All computers have RAM, and DRAM is one kind of RAM we see in modern desktops and laptops.
How does a DRAM cell work?
DRAM works by using the presence or absence of charge on a capacitor to store data. Since a single DRAM cell is composed of only two components—a transistor and a capacitor—DRAM can be made in high densities, and it is inexpensive compared to other types of memory.
What is DRAM and why is it important?
DRAM is widely used in digital electronics where low-cost and high-capacity memory is required. One of the largest applications for DRAM is the main memory (called the “RAM”) in modern computers and graphics cards (where the “main memory” is called the graphics memory).
What are the principal characteristics of DRAM technology?
What are the principal characteristics of DRAM technology? Each cell in Dynamic RAM must be refreshed periodically to preserve its charge. It is high density and low cost. Why is Synchronous DRAM so-called?
What devices use DRAM?
What is DRAM used for?
- Personal and Mobile Devices (Cell and smartphones, GPSs, desktop computers, etc.)
- Consumer Electronics (Video cards, digital cameras, portable media players)
- Computer Equipment (Servers, routers, switches, other equipment used in basic computing)
Who invented DRAM?
Fujio Masuoka
Robert H. Dennard
Dynamic random-access memory/Inventors
What are the two principal characteristics of DRAM technology?
How was DRAM invented?
Dennard invented the Dynamic Random Access Memory (DRAM) cell in 1966. The ultimate effect of Dennard’s invention is that a single chip can hold 16 billion bits, or 16 gigabits, of RAM in today’s smartphones. He was granted a patent for his one-transistor DRAM in 1968.
When was DRAM created?
In 1967, Dennard and IBM filed a patent application for his single-transistor dynamic random access memory, or DRAM, and the patent was issued in 1968.
Which is the first DRAM chip in the world?
In 1970, the newly formed Intel company publicly released the 1103 (see the nearby image), the first DRAM chip (1K bit PMOS dynamic RAM ICs), and by 1972 it was the best selling semiconductor memory chip in the world, defeating magnetic core type memory. The first commercially available computer using the 1103 was the HP 9800 series.
Who is the inventor of dynamic random access memory?
Robert Dennard invented one of the most significant advances in computer technology of modern time—dynamic random access memory, (or DRAM, better known simply as RAM). Robert H. Dennard was born in Terrell, Texas, USA, in 1932.
How is charge stored in a DRAM capacitor?
The charge (Q) stored in a capacitor is equal to capacitance times voltage (Q = C x V). Over theyears, DRAM operating voltage has decreased (i.e., 12V to 5V to 3.3V). As voltage decreases, thestored charge will also decrease. Design improvements allow for the decrease in the cell chargeas long as the capacitance remains in the range of 30fF.
How big is a 16MB DRAM array?
DRAM Array Access 16Mb DRAM array = 4096 x 4096 array of bits 12 row address bitsarrive first Row Access Strobe (RAS)