How many types of files (types) are there in the computer and what are their functions?

1. "323" "H.323 Internet Telephony Technology"

2. "386" "Virtual Device Driver"

3. "ACA" "Microsoft Agent Character File (HTTP format)"

4. "ACF" "Microsoft Agent Character File (HTTP format)"

5. "ACG" "Microsoft Agent Preview File"

6. "ACL" "AutoCorrect List File"

7. "ACS" "Microsoft Agent Character File"

8. "ACW" "Auxiliary Function Wizard Settings"

9. "ADE" "Microsoft Access Project Extension"

10. "ADN" "Microsoft Access Blank Project Template"

11. "ADP" "Microsoft Access Project"

12. "AIF" "AIFF Format Sound"

13. "AIFC" "AIFF Format Sound"

14 . "AIFF" "AIFF Format Sound"

15. "ANI" "Animated Cursor"

16. "ASA" "Active Server Document"

17 . "ASD" "ASF Stream Description File"

18. "ASF" "Windows Media Audio/Video File"

19. "ASP" "Active Server Document"

20. "ASX" "Windows Media Audio/Video Shortcut"

21. "AU" "AU Format Sound"

22. "AUDIOCD" "AudioCD"

23. "AVI" "Video Clip"

24. "AW" "Answer Wizard File"

25. "BKF" "Windows Backup File"

26. "BLG" "Performance Monitor File"

27. "BMP" "BMP Image"

28. "CAT" "Security Catalog"

29. "CDA" "CD Audio Track"

30. "CDF" "Channel File"

31. "CDX" "Active Server Document"

32. "CER" "Security Certificate"

33. "CHK" "Restored file fragments"

34. "CHM" "Compiled HTML Help File"

35. "CLP" "Clipboard Clip"

36. "CNF" "Speed ??Dial"

37. "COL" " HTML Help file"

38. "CPL" "Control Panel Extensions"

39. "CRL" "Certificate Revocation List"

40. "CRT" "Security Certificate"

41. "CSS" "Cascading Style Sheets Document"

42. "CSV" "Microsoft Excel Comma Separated Values ??File"

43. "CUR" "Cursor"

44. "DB" "Database File"

45. "DCS" "Database Content Source"

46. "DER" "Security Certificate"

47. "DESKLINK"

"DESKLINK File"

48. "DET" "Office Data File"

49. "DIB" "BMP Image"

50. "DIC" " Text document"

51. "DIF" "Microsoft Excel Data Interchange Format"

52. "DOC" "Microsoft Word Document"

53. "DOCHTML " "Microsoft Word HTML document"

54. "DOCMHTML" "DOCMHTML file"

55. "DOT" "Microsoft Word template"

56. " DOTHTML" "Microsoft Word HTML Template"

57. "DQY" "Microsoft Excel ODBC Query File"

58. "DRV" "Device Driver"

59. "DSN" "Data Source Name"

60. "DUN" "Dial-Up Networking File"

61. "DVD" "DVD"

62. "ECS" "Exchange Server Content Source"

63. "ELM" "Microsoft Office Theme File"

64. "EMF" "EMF Image"

65. "EML" "Outlook Express Mail Message"

66. "EXC" "Text Document"

67. "FAD" "Office Data File"

68. "FAV" "FAV file"

69. "FCS" "File *** content source"

70. "FFA" "File search index"

71. "FFL" "File retrieval index"

72. "FFT" "File retrieval index"

73. "FFX" "File retrieval index" "

74. "FON" "Font File"

75. "FPDOCLIB" "Microsoft FrontPage Document Library"

76"FPHOMEOP" Microsoft FrontPage Home Page Open"

77. "FPHOMEPG" "Microsoft FrontPage Home Page"

78. "FPHTML" "Microsoft FrontPage HTML Document"

79. "FPLIST" " Microsoft FrontPage List"

80. "FPNOPUB" "Microsoft FrontPage Dont Publish"

81. "FPOPEN" "Microsoft FrontPage Open File"

82. " FPSURVEY" "Microsoft FrontPage Survey"

83. "FPWEB" "FPWEB file"

84. "FRG" "FRG file"

85. "GIF " "GIF image"

86. "GRA" "Microsoft Graph chart"

87. "GRP" "Microsoft Program Group"

88. "HLP " "Help file"

89. "HOL" "Microsoft Outlook

Holidays"

90. "HT" "HyperTerminal File"

91. "HTA" "HTML Application"

92. "HTC" "HTC File "

93. "HTM" "HTML Document"

94. "HTML" "HTML Document"

95. "HTT" "HyperText Template"

96. "HTX" "HTML Template for Internet Databases"

97. "ICC" "ICC Profile"

98. "ICM" " ICC Profile"

99. "ICO" "Icon"

100. "ICS" "iCalendar File"

101. "IDC" "IDC File "

102. "III" "Intel IPhone Compatible"

103. "INF" "Installation Information"

104. "INI" "Configuration Settings"

105. "INS" "Internet Communication Settings"

106. "IQY" "Microsoft Excel Web Query File"

107. "ISP" "Internet Communication Setup"

108. "ITS" "Internet Document Set"

109. "ITSS" "Microsoft Infotech Storage System File"

110. "IVF ""Indeo video file"

111. "JFIF" "JPEG image"

112. "JOB" "Job object"

113. "JOD" "Microsoft.Jet.OLEDB.4.0"

114. "JPE" "JPEG image"

115. "JPEG" "JPEG image"

116. "JPG" "JPEG Image"

117. "JS" "JScript Script File"

118. "JSE" "JScript Encoded Script File"

119 . "LDB" "Microsoft Access Log Lock Information"

120. "LEX" "Dictionary File"

121. "LOG" "Text Document"

122"LWV" Microsoft Linguistically Enhanced Sound File"

123. "M1V" "Movie File (MPEG)"

124. "M3U" "M3U File"

125. "MAD" "Microsoft Access module shortcut"

126. "MAF" "Microsoft Access form shortcut"

127. "MAG" "Microsoft Access chart "Shortcut"

128. "MAM" "Microsoft Access Macro Shortcut"

129. "MAPIMAIL" "MAPIMAIL file"

130. "MAQ" "Microsoft Access Query Shortcut"

131. "MAR" "Microsoft Access Report Shortcut"

>132. "MAS"Microsoft Access Stored Procedure Shortcut"

133. "MAT" "Microsoft Access Table Shortcut"

134. "MAU" "MAU File"

135. "MAV" "Microsoft Access View Shortcut"

136"MAW"Microsoft Access Data Access Page Shortcut"

137. "MDA" "Microsoft Access Add-in"

138. "MDB" "Microsoft Access Application"

139. "MDBHTML" "Microsoft Access HTML Document"

140. " MDE" "Microsoft Access MDE Database"

141. "MDN" "Microsoft Access Blank Database Template"

142. "MDT" "Microsoft Access Add-in Data"

143. "MDW" "Microsoft Access Workgroup Information"

144. "MDZ" "Microsoft Access Database Wizard Template"

145. "MGC" "Media Catalog File "

146. "MHT" "MHTML Document"

147. "MHTML" "MHTML Document"

148. "MID" "MIDI Sequence"

149. "MIDI" "MIDI sequence"

150. "MML" "Media directory file"

151. "MMM" "Media clip"

152. "MMW" "Media Directory File"

153. "MP2" "Movie File (MPEG)"

154. "MP2V" "Movie File ( MPEG)"

155. "MP3" "MP3 format sound"

156. "MPA" "Movie file (MPEG)"

157. "MPE " "Movie File (MPEG)"

158. "MPEG" "Movie File (MPEG)"

159. "MPF" "Media Package File"

160. "MPG" "Movie File (MPEG)"

161. "MPV2" "Movie File (MPEG)"

162. "MSC" "Microsoft Common Management Document"

163. "MSG" "Outlook Project"

164. "MSI" "Windows Installer Package"

165. "MSP" "Windows Installer Patching Program"

166. "MSRCINCIDENT" "Microsoft Remote Access Event"

167. "MSSTYLES" "Windows Visual Style File"

168. "MSWMM" "Windows Movie Maker Project"

169. "NCS" "Lotus Notes Content Source"

170. "NFO" "MSInfo Document"

171. " NICK" "Office Data File"

172. "NK2" "Office Data File"

173."NMW""

Microsoft NetMeeting T126 Compatible Whiteboard Document"

174. "NWS" "Outlook Express News Message"

175. "OBD" "OBD File"

176. "OBT" "OBT file"

177. "OBZ" "OBZ file"

178. "OCX" "ActiveX control"

179. "ODC "Microsoft Office Data Connection"

180. "ODCCUBEFILE" "ODCCUBEFILE file"

181. "ODCDATABASEFILE" "ODCDATABASEFILE file"

182. "ODCNEWFILE " "ODCNEWFILE file"

183. "ODCTABLEFILE" "ODCTABLEFILE file"

184. "OFT" "Outlook project template"

185. "OPC" "Microsoft Cleanup Wizard File"

186. "OPS" "Office 10 Settings File"

187. "OQY" "Microsoft Excel OLAP Query File"

188. "OSS" "Office Search"

189. "OST" "Office Data File"

190. "OTF" "OpenType Font File"

191. "P10" "Certificate Application"

192. "P12" "Personal Information Exchange"

193. "P7B" "PKCS #7 Certificate"

194. "P7C" "Digital Identification File"

195. "P7M" "PKCS #7 MIME Message"

196. "P7R" "PKCS #7 Certificate"

197. "P7S" "PKCS #7 Signature"

198. "PAB" "Office Data File"

199. "PBK" "Dial-up Phone Book"

200. "PCB" "PCB file"

201. "PCD" "Photo CD image"

202. "PCX" "PCX image"

203. "PFM" "Type 1 Font File"

204. "PFX" "Personal Information Exchange"

205. "PIP" "Microsoft Office Settings File"

206. "PKO" "Public Key Security Object"

207. "PMA" "Performance Monitor File"

208. "PMC" "Performance Monitor File"

209. "PML" "Performance Monitor File"

210. "PMR" "Performance Monitor File"

211 . "PMW" "Performance Monitor File"

212. "PNG" "PNG Image"

213. "POT" "Microsoft PowerPoint Template"

214. "POTHTML" "Microsoft PowerPoint HTML Template"

215. "PPA" "Microsoft PowerPoint Add-in"

6. "PPS" "Microsoft PowerPoint Slide Show"

217. "PPT" "Microsoft PowerPoint Presentation"

218. "PPTHTML" "Microsoft PowerPoint HTML Document"

219. "PPTMHTML" "PPTMHTML file"

220. "PRF" "msrating.dll,-3001"

221. "PST" "Office data file "

222. "PSW" "Password Backup"

223. "PWZ" "Microsoft PowerPoint Wizard"

224. "QDS" "Directory Query"

225. "RAT" "msrating.dll,-3000"

226. "RDP" "Remote Desktop Connection"

227. "REG" " Registry key"

228. "RMI" "MIDI sequence"

229. "RNK" "Dial shortcut"

230. "RQY" " Microsoft Excel OLE DB query file"

231. "RTF" "RTF format"

232. "RWZ" "Office data file"

233. " SC2" "Microsoft Schedule+ Application"

234. "SCD" "Microsoft Schedule+ Application"

235. "SCH" "Microsoft Schedule+ Application"

236. "SCP" "Text Document"

237. "SCT" "Windows Script Component"

238. "SDB" "Appfix Software Package"

239. "SHB" "Insert shortcut into document"

240. "SHS" "Fragment object"

241. "SHTM" "HTML Document"

242. "SHTML" "HTML Document"

243. "SLK" "Microsoft Excel SLK Data Import Format"

244. "SLL" "SLL File"

245. "SND" "AU Format Sound"

246. "SNP" "Snapshot File"

247. "SPC" "PKCS #7 Certificate"

248. "SPL" "Shockwave Flash Object"

249. "SST" "Microsoft Series Certificate Store"

250. "STF" "Microsoft Installation File "

251. "STL" "Certificate Trust List"

252. "STM" "HTML Document"

253. "SWF" "Shockwave Flash Object "

254. "SYS" "System Files"

255. "TCS" "Tahoe Server Content Source"

256. "THEME" "Windows Theme" File"

257. "TIF" "TIF image"

258. "TIFF" "TIF image

259. "TTC" "TrueType Collection font file"

260. "TTF" "TrueType font file"

261. "TXT" "Text Document"

262. "UDL" "Microsoft Data Link"

263. "ULS" "Internet Location Service"

264. "URL" "Internet "Shortcut"

265. "VBE" "VBScript Encoded Script File"

266. "VBS" "VBScript Script File"

267. "VCF" "vCard File"

268. "VCS" "vCalendar File"

269. "VXD" "Virtual Device Driver"

270. "WAB" "Digital ID File"

271. "WAV" "Waveform Sound"

272. "WAX" "Windows Media Audio Shortcut"

273. " WBK" "Microsoft Word Backup Document"

274. "WCS" "Web Site Content Source"

275. "WEB" "Office Data File"

276. "WEBPNP" "Webpnp"

277. "WHT" "Microsoft NetMeeting Old Whiteboard Document"

278. "WIZ" "Microsoft Word Wizard"

279. "WIZHTML" "Microsoft Access HTML Template"

280. "WLL" "WLL File"

281. "WM" "Windows Media Audio/Video File"

282. "WMA" "Windows Media Audio File"

283. "WMD" "Windows Media Player Download Package"

284. "WMF" "WMF Image"

285. "WMP" "Windows Media Player File"

286. "WMS" "Windows Media Player Skin File"

287. "WMV " "Windows Media Audio/Video Files"

288. "WMX" "Windows Media Audio/Video Shortcuts"

289. "WMZ" "Windows Media Player Appearance Package"

290. "WPS" "WPS File"

291. "WRI" "Write Document"

292. "WSC" "Windows Script Component"

293. "WSF" "Windows Script File"

294. "WSH" "Windows Script Host Settings File"

295. "WTX" "Text Document"

296. "WVX" "Windows Media Audio/Video Shortcuts"

297. "XLA" "Microsoft Excel Add-in"

298. "XLB" "Microsoft Excel worksheet"

299. "XLC" "Microsoft Excel chart"

300. "XLD" "Microsoft Excel 5.0 dialog box editing table"

301. "XLK" "Microsoft Excel backup file"

302. "XLL" "Microsoft Excel XLL Add-in"

303. "XLM" "Microsoft Excel 4.0 Macro"

304. "XLS" "Microsoft Excel worksheet"

305. "XLSHTML" "Microsoft Excel HTML document"

306. "XLSMHTML" "XLSMHTML file"

307. "XLT" "Microsoft Excel Template"

308. "XLTHTML" "Microsoft Excel HTML Template"

309. "XLV" "Microsoft Excel VBA Module"

310. "XLW" "Microsoft Excel Workspace"

311. "XML" "XML Document"

312. "XNK" "Exchange Shortcut"

313 . "XSL" "XSL style sheet"

314. "ZAP" "Software installation settings"

315. "ZIP" "Compressed (zipped) folder"

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