Microchip Technology MPLAB PICkit 4 User Manual page 73

Glossary
LVDS
Low Voltage Differential Signaling. A low noise, low-power, low amplitude method for high-speed (gigabits per
second) data transmission over copper wire.
With standard I/O signaling, data storage is contingent upon the actual voltage level. Voltage level can be affected by
wire length (longer wires increase resistance, which lowers voltage). But with LVDS, data storage is distinguished
only by positive and negative voltage values, not the voltage level. Therefore, data can travel over greater lengths of
wire while maintaining a clear and consistent data stream.
Source: http://www.webopedia.com/TERM/L/LVDS.html
Machine Code
The representation of a computer program that is actually read and interpreted by the processor. A program in binary
machine code consists of a sequence of machine instructions (possibly interspersed with data). The collection of all
possible instructions for a particular processor is known as its "instruction set".
Machine Language
A set of instructions for a specific central processing unit, designed to be usable by a processor without being
translated.
Macro
Macro instruction. An instruction that represents a sequence of instructions in abbreviated form.
Macro Directives
Directives that control the execution and data allocation within macro body definitions.
Makefile
Export to a file the instructions to Make the project. Use this file to Make your project outside of MPLAB IDE/MPLAB
X IDE, i.e., with a make.
Make Project
A command that rebuilds an application, recompiling only those source files that have changed since the last
complete compilation.
MCU
Microcontroller Unit. An abbreviation for microcontroller. Also uC.
Memory Model
For C compilers, a representation of the memory available to the application. For the PIC18 C compiler, a description
that specifies the size of pointers that point to program memory.
Message
Text displayed to alert you to potential problems in language tool operation. A message will not stop operation.
Microcontroller
A highly integrated chip that contains a CPU, RAM, program memory, I/O ports and timers.
Microcontroller Mode
One of the possible program memory configurations of PIC18 microcontrollers. In microcontroller mode, only internal
execution is allowed. Thus, only the on-chip program memory is available in microcontroller mode.
Microprocessor Mode
One of the possible program memory configurations of PIC18 microcontrollers. In microprocessor mode, the on-chip
program memory is not used. The entire program memory is mapped externally.
User Guide
DS50002751D-page 73
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