Definitions, Contact, 8 definitions – Matrix Orbital GLK24064-16-1U User Manual
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8 Definitions
ASCII: American standard code for information interchange used to give standardized numeric codes
to alphanumeric characters.
BPS:
Bits per second, a measure of transmission speed.
FFSTN: Double film super-twisted nematic in reference to an LCD. The addition of two layers of film
between the STN display and polarizer improves contrast.
GPO: General purpose output, used to control peripheral devices from a display.
GUI:
Graphical user interface.
Hexadecimal: A base 16 number system utilizing the numerals and letters 0 through F to represent the
values 0-15.
I
2
C:
Inter-integrated circuit protocol employing a clock and data line to communicate a short
distance at slow speeds between a master and up to 128 addressable slave devices. A Matrix Orbital
display is a slave device.
LSB:
Least significant bit or byte in a transmission, the rightmost when read.
MSB: Most significant bit or byte in a transmission, the leftmost when read.
RS232: Recommended standard 232, a common serial protocol. A low level is -30V, a high is +30V.
SDA:
Serial data line used to transfer data in I
2
C protocol. This open drain line should be pulled high
through a resistor. Nominal values are between 2K and 10K Ω.
SCL:
Serial clock line used to designate data bits in I
2
C protocol. This open drain line should be pulled
high through a resistor. Nominal values are between 2K and 10K Ω.
STN:
Super-twisted nematic in reference to an LCD. In a relaxed or nematic state, crystals orientate
themselves in the same direction and allow light to pass. In an excited state these crystals align to block
light. Super-twisted crystals move from 180 to 270 degrees providing greater contrast than TN models.
TTL:
Transistor-transistor logic applied to serial protocol. Low level is 0V while high logic is 5V.
USB: Universal Serial Bus protocol widely used in PCs.
9 Contact
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