JMD-Jamaican Dollar. Jamaica, Dollar. The Jamaican Dollar is the currency of Jamaica. Our currency rankings show that the most popular Jamaica Dollar exchange rate is the USD to JMD rate. The currency code for Dollars is JMD, and the currency symbol is J$.
Full Definition of JETSAM. 1. : the part of a ship, its equipment, or its cargo that is cast overboard to lighten the load in time of distress and that sinks or is washed ashore.
DRAM is dynamic memory and SRAM is static memory. The DRAM chips on a circuit board need to refresh every few milliseconds. This is done by rewriting the data to the module. Chips that need refreshing are volatile memory. DRAM accesses the memory directly, holds memory for a short period and loses its data when the power is shut off. SRAM is volatile memory that is static and does not need refreshing. Because SRAM is a lot faster, it is used in registers and cache memory.