1. L band

2. L1 (level 1) cache

3. L2 (level 2) cache

4. L2TP (Layer 2 Tunneling Protocol)

5. L3 (level 3) cache

6. L8R (Later)

7. LabelFlash

8. Lambert’s Law

9. LAMP

10. LAN (Local Area Network)

11. LAN adapter

12. LAN port

13. LAN switch

14. language-based editor

15. language-sensitive editor

16. LAP (Link Access Procedure)

17. LAPM (Link Access Procedure for Modems)

18. laptop computer

19. laser disk

20. laser printer (1)

21. laser printer (2)

22. last mile

23. LAT (Local Area Transport)

24. latency (1)

25. latency (2)

26. latency (3)

27. LAWN (Local Area Wireless Network)

28. layer

29. layout (1)

30. layout (2)

31. layout (3)

32. layout engine

33. lazy mode

34. LBA (Logic Block Addressing)

35. LCD (Liquid Crystal Display)

36. LCD projector

37. LCoS (Liquid Crystal on Silicon)

38. LD (LaserDisc)

39. LD (Later, dude)

40. LDAP (Lightweight Directory Access Protocol)

41. LDPC (Low Density Parity Check Code)

42. LDR (Long-distance relationship)

43. leased line

44. LEC (Local Exchange Carrier)

45. Leclanché cell

46. LED (Light Emitting Diode)

47. legacy application

48. legacy data

49. legacy system

50. LF (Low Frequencies)

51. Libranet

52. library (1)

53. library (2)

54. library (3)

55. library routine

56. light intensity

57. light pen

58. lightness

59. LightScribe

60. Li-ion (Lithium ion) battery

61. LILO

62. LindowsOS

63. line

64. line card

65. line driver

66. line printer

67. line rate

68. line speed

69. line switching

70. line width, linewidth (1)

71. line width, linewidth (2)

72. linear prediction

73. link (1)

74. link (2)

75. link (3)

76. link (4)

77. link (5)

78. link (6)

79. link (7)

80. link state routing protocol

81. link-by-link encipherment

82. linker

83. linkware

84. Linspire

85. Linux

86. Liquid Player

87. LISP (LISt Processor)

88. list (1)

89. list (2)

90. list box

91. Listserv

92. Lites

93. lithium polymer battery

94. little endian

95. LLC (Logical Link Control)

96. LLTA (Lots and lots of thunderous applause)

97. LMDS (Local Multipoint Distribution Service)

98. LMK Let Me Know

99. L-Mode

100. LMTP (Local Mail Transfer Protocol)

101. LNB (Low-Noise Block downconverter)

102. load (1)

103. load (2)

104. load (3)

105. load (4)

106. load balancing

107. load module

108. loader

109. loading

110. LOB (Large OBject)

111. LOB (LIne-Of-Business) application

112. local

113. local bus

114. local loop

115. local variable

116. locale

117. localhost

118. Localhost

119. localization (L10N)

120. LocalTalk

121. location

122. location bar

123. lock

124. lockup

125. LOCT (Layered Open Crypto Toolkit)

126. log (1)

127. log (2)

128. log (3)

129. logic bomb

130. logic gate

131. logical clock

132. logical processor

133. logical shift

134. logical volume

135. login (log-in, logon)

136. LOL (Laughing out loud)

137. long (long integer)

138. long filenames

139. longhaul

140. Longhorn

141. LonWorks

142. loop (1)

143. loop (2)

144. LOS (Line Of Sight)

145. LOS propagation

146. lossless compression

147. lossy compression

148. Lotus

149. Lotus Notes

150. LotusScript

151. LoveLetter, LoveBug

152. low radiation

153. low-level access

154. low-level language

155. LPAR (Logical PARtition)

156. LPC (Linear Predictive Coding)

157. LPCM (Linear PCM)

158. LPD (Line Printer Daemon)

159. LPDA (Log Periodic Dipole Array)

160. LPT (Line Printing Terminal)

161. LPX motherboard

162. LRF (Little Rubber Feet)

163. LSB (Least Significant Bit)

164. LTE (Long Term Evolution)

165. LTM (Laugh to myself)

166. LTNS (Long time no see)

167. LTPS TFT LCD (Low-Temperature Poly-Silicon Thin-Film Transistor Liquid Crystal Display)

168. LTR (Long-term relationship)

169. LUHN formula

170. LULAB (Love you like a brother)

171. LULAS (Love you like a sister)

172. luma

173. lumen

174. luminance (1)

175. luminance (2)

176. luminosity function

177. luminous emittance

178. luminous flux

179. luminous intensity

180. lurk

181. LVDS (Low Voltage Differential Signaling)

182. LWP (Library for World Wide Web in Perl)

183. LWP (Light-Weight Process)

184. Lycos

185. Lynx (1)

186. Lynx (2)

187. LZH ( Lempel-Ziv-Haruyasu)

188. LZW (Lempel-Ziv Welch) algorithm