User's Manual | ACOM eBox | Ethernet Remote Control Device
October 2021
S e c t i o n TERMS and ABBREVIATIONS | Page 55 of 60
MAC address
In computer science, the media access control address (MAC address) is a unique
identifier assigned to a network interface controller (NIC) for use as a network address
in communications within a network segment. As typically represented, MAC addresses
are recognizable as six groups of two hexadecimal digits, separated by hyphens, colons,
or without a separator. MAC addresses are primarily assigned by device manufacturers,
and are therefore often referred to as the burned-in address, or as an Ethernet
hardware address, hardware address, or physical address. ........................................................... 26
NTP
In computing and electronic systems, the Network Time Protocol (NTP) is a protocol
used to synchronize computer clock times in a network. It belongs to and is one of the
oldest parts of the TCP/IP protocol suite. The term NTP applies to both the protocol and
the client-server programs that run on computers. NTP uses Coordinated Universal Time
(UTC) to synchronize computer clock times with extreme precision, offering greater
accuracy on smaller networks - down to a single millisecond in a local area network and
within tens of milliseconds over the internet. NTP does not account for time zones,
instead relying on the host to perform such computations. .......................................................... 26
OS
In computer science, the operating system (OS) is system software that manages
computer hardware, software resources, and provides common services for computer
programs. For hardware functions such as input and output and memory allocation, the
operating system acts as an intermediary between programs and the computer
hardware, although the application code is usually executed directly by the hardware
and frequently makes system calls to an OS function or is interrupted by it. Operating
systems are found on many devices that contain a computer - from cellular phones and
video game consoles to web servers and supercomputers. ........................................................... 10
PC
A personal computer (PC) is a multi-purpose computer whose size, capabilities, and
price make it feasible for individual use. Personal computers are intended to be
operated directly by an end user, rather than by a computer expert or technician. ..................... 22
RJ-45
In telecommunications and computers, the RJ-45 (standardized Registered Jack) is a
type of cable connector which is mainly used in the computer networks. Ethernet cables
with RJ-45 connectors are also called RJ-45 cables. These RJ-45 cables feature a small
plastic plug on each end, and the plugs are inserted into RJ-45 sockets of the Ethernet
devices. RJ-45 is the most known and popular connector type in the IT world. ............................ 19
RS-232
In telecommunications and computers, the RS-232 (Recommended Standard 232) is a
standard for serial communication transmission of data. The standard defines the
electrical characteristics and timing of signals, the meaning of signals, and the physical
size and pinout of connectors. The RS-232 standard had been commonly used in
computer serial ports and is still widely used in industrial communication devices. ................ 15, 50