AMSTRAD cpc 6128 User Instruction page 460

Light Pen
Another alternative input method, using a pen or 'wand'.
Line number
BASIC and some other languages use programs that are arranged in line number
order.
Lisp
The acronym formed from LISt Processor language. Another high level computer
language.
Logic
The electronic components that carry out the elementary logical operations and
functions, from which every operation of a computer is ultimately built up.
Logical device
The representation of a device that may be different to its physical form. For
example the
CP/M
logical device
LS T
may be assigned to the Centronics port or
perhaps the VDU.
LOGO
The name of a programming language derived from the Greek word logos, which
means word. Logo is designed to teach the fundamentals of computer
programming.
Loop
A process in a program that is executed repeatedly by the computer until a
certain condition is satisfied.
Low-level language
Such as 'assembly language'. A programming language in which each instruction
corresponds to the computer's machine code instruction.
LSI
Large Scale Integration., The development of integrated circuits, packing more
functions onto ever smaller pieces of silicon.
Glossary Appendix 2 Page 17