Random Access Memory and The SIMM Ram

RAM

In computing the random access memory, RAM stands (the corresponding English word random-access memory), is a type of computer memory characterized by allowing direct access to any memory address with the same access time.

A RAM is contrasted to sequential access storage and direct access memory against which has significantly lower access times why it is used as the primary memory.

The type of RAM is currently the most common solid-state, a read-write and volatile, but fall within the type of random access memory, most types of ROM (understood as the exception and not the most common memory read-only), the NOR flash (a type of flash memory), as well as various types of computer memory used at the dawn of computing, and now no longer used such as magnetic core memory.

SIMM Ram

The SIMM Single In-Line Memory Module is a model characterized by RAM card contacts on one side of the card.

It was introduced into the motherboard to an Intel 80386 and Motorola 68000 microprocessors, originally had a length of 3.5 inches, 30-pin and 8-bit data, were in denominations of 1, 2, 4, 8 megabytes with an access time of about 70 nanoseconds and needed a supply of 5 volts. Then they were introduced to 72-pin SIMM boards, 4.25 inches long, capable of handling 32-bit data that were used in the motherboard 486, Pentium and Motorola 680x0. Also increased the capacity of a single module, available in denominations of 4, 8, 16, 32 and 64 megabytes. For 72-pin SIMM access time also came down to 60 nanoseconds.

RAM also has a second meaning more restricted but more widespread today that RAM is the most common type of solid state, in read-write and volatile.

RANDOM ACCESS MEMORY