The term static differentiates SRAM from DRAM (dynamic random-access memory) which must be periodically refreshed. SRAM is faster and more expensive than DRAM; it is typically used for CPU cache while DRAM is used for a computer's main memory. 1 Applications and uses 1.1 Characteristics 1.1.1 Clock rate and power.
A biological key is a list of questions that can categorize the items.
A dichotomous key (classification key) is a tool used by biologists to identify unknown organisms. Biologists have identified and named over 1.5 million different species. A dichotomous key is a branching key; a list of the characteristics of different organisms. These characteristics are arranged in a series of steps which are used to identify the unknown organism.