DRAM - 1 Transistor RAM - overview
Physics Accomplishment | 1968
IBM researcher: Robert H. Dennard
Where the work was done: IBM T.J. Watson Research Center
What we accomplished: Dennard (pictured) invented dynamic random-access memory. DRAM is the ubiquitous memory used from cellphones to laptops to servers. Since it is only 1-transistor, DRAM has generally subsumed 6-transistor Static RAM due to its smaller size and power.
DRAM is widely used in digital electronics where low-cost and high-capacity memory is required.
See also: Dennard Scaling
Image credit: Fred Holland