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PC/104 – DURACHASSIS 5X5 机箱 37
The Programmed Input/Output is a method of transferring data over the IDE interface. The other way is the
Direct Memory Access (DMA)
R
RAM
RAM (Random Access Memory). Semiconductor-based memory that can be read-from and written-to by the
microprocessor or other hardware devices.
ROM
ROM stands for Read Only Memory. This memory can only be read-from but not written-to.
S
SCSI
SCSI stands for Small Computer System Interface. It is an I/O bus designed as a method for connecting
several classes of peripherals to a host system without requiring modifications to generic hardware and
software.
SECAM
SECAM (Sequential Couleur a Memoire； Sequential Colour with Memory). The television standard for
France，Russia，and most of Eastern Europe. As with PAL，SECAM is based on a 50-Hz power system，
but it uses a different encoding process and displays 819 horizontal lines per frame at a scan rate of 25
frames per second (50 fields per second). See also NTSC and PAL format.
SMBus
SMBus (System Management Bus). A two-wire interface based on the I²C protocol. The SMBus is a low-
speed bus that provides positive addressing for devices，as well as bus arbitration.
SSD
SSD stands for Solid State Disk (i.e. Disk on Chip，Disk on Module，Flash ROM,).
In fact this is not a real disk but a silicon support memory without mechanical parts that are in movement.
TDMA
Time Division Multiple Access is a technology for delivering digital wireless service using time division
multiplexing，that is a type of multiplexing combining data streams by assigning each stream a different time
slot in a set.
U
UART
UART (Universal Asynchronous Receiver/Transmitter)，is a module composed of a circuit that contains both
the receiving and transmitting circuits required for asynchronous serial communication.
USB
USB (Universal Serial Bus) is a 4-pin bi-directional，isochronous，dynamically attachable serial peripheral
bus that is capable of cascading low/medium speed peripherals (less than 10 Mbit/s)