【正文】 ? Panasonic and Quasar unveil handheld puters, made by Matsushita. The units use a 1MHz 6502 CPU, and weigh 14 ounces (397 grams). [] 1981 November 10 ? Panasonic introduces The Link handheld puter, the size of a small book, with a keyboard but no display. It can be hooked up to a television or to a host puter via a telephone dialup connection. Price is US$500600. [] 1982 January ? Sharp introduces the Sharp PC1500 Hand Held Personal Computer. It es with 16 KB ROM, and KB RAM. Price for puter is US$300. Price for tiny color graphics printer that attaches to the side, US$250. [] ? Radio Shack introduces the TRS80 Pocket Computer, Model PC2, for US$280. It uses a MHz 8bit microprocessor, and has a 26character display, with upper and lower case characters. It es with 16 KB ROM, and KB RAM, expandable to 16 KB. An optional 4color printer attaches to the side. [] [] August ? HewlettPackard introduces the HP75C portable puter. It features a rechargeable battery pack, 16K RAM, 65 key keyboard, 1 line by 32 character LCD display, magic card reader, 48K ROM including BASIC interpreter, text editor, and scheduler. Size is is x 6 x inches。 weight is 26 ounces。 price is US$995. [] [] [] (month unknown) ? NEC introduces the PC20xx HandHeld Computer. It features an 8bit 4 MHz CMOS uPD7907 microprocessor, 36 KB ROM, 16 KB RAM, serial port, and 40x2 character LCD screen. [] ? Sanyo introduces the PHC8000 handheld puter. It features a NSC800 CMOS microprocessor, 24 KB ROM, 4 KB RAM, oneline LCD screen, optional I/O unit PHC8010 allows connection to video monitor and microcassette recorder and adds 14 KB ROM and 22 KB RAM. [] ? Toshiba introduces the Pasopia Mini. It features an 8bit CMOS microprocessor, 4 KB RAM, 20 KB ROM including 16 KB BASIC, and a oneline LCD screen. [] 1983 January ? At the Winter CES, Commodore Business Machines demonstrates the HHC4 (HandHeld Computer). It features 24character LCD screen with 4 KB RAM expandable to 16 KB. This was one of Commodore’s prePET business products. Price is US$199. [] (month unknown) ? Radio Shack introduces the TRS80 Pocket Computer, Model PC4, replacing the PC1, for US$70. [] May ? At the Japan Microputer Show, Casio shows the Casio FP 200 handheld microputer. It features 8line x 20 character display, 8 KB RAM, 32 KB ROM, for about US$300. [] ? At the Japan Microputer Show, Canon shows the Canon X07 Handy Personal Computer. It features an NSC 800 microprocessor (Z80 patible), 20 KB ROM with BASIC, 4line by 20character display, just over one pound weight, for about US$445. [] ? At the Japan Microputer Show, National shows the National JR800, featuring 63A01V processor (patible with Motorola 6801), 8line by 32character LCD, 16 KB RAM, 20 KB ROM with BASIC, 1551 bytes of video RAM, fiveoctave music, 1 5/8 pounds weight, 10 1/4 x 5 5/8 x 1 3/8 inches, and runs for 25 hours on batteries. [] (month unknown) ? Texas Instruments introduces the Compact Computer 40 (CC40). It uses the 8bit TMS 70C20 processor, 6 KB RAM, 34 KB ROM with BASIC, and 31x1 LCD display. It runs on four AA batteries, lasting up to 200 hours. [] ? Radio Shack introduces the PC3 pocket puter. It features 24character LCD, KB RAM, 4 ounce weight, for US$. [] ? Sharp introduces the PC1250 pocket puter, for US$110. It measures 5 5/16 x 2 1/2 x 3/8 inches. [] 1984 January ? Seiko Instruments . Inc. displays the first wristwatch puter, with a 10character, 4line LCD. [1] (month unknown) ? Casio unveils the PB700 handheld puter. It features 4 KB RAM (expandable to 16 KB), 20x4 character display, 58 key keyboard, BASIC. Weight is pounds。 price is about US$200. Optional addon FA10 color printer/plotter costs about US$250. Optional addon CM1 microcassette module costs about US$90. [] 1989 (month unknown) ? Atari Computer introduces the Portfolio, a 1pound DOSbased PC. It uses a MHz 80C88 processor, 240x64 resolution screen, and runs on three AA batteries. Price: US$400. [] September ? Poqet Computer ships the Poqet PC puter, featuring 512 KB RAM, x inch monochrome LCD screen, 80x25 text, 640x200 pixels, 77 keys, 7 MHz Intel 80C88 processor, 640 KB ROM, MS DOS and GW BASIC in ROM, card slots for ROM or RAM. The system runs for about 100 hours on AA batteries. Weight is 1 pound。 price is about US$20xx. [] 1991 (month unknown) ? Apple Computer petitions the FCC to allocate a 40 MHz wide band of frequencies for use with its personal digital assistants. [] September ? Chips amp。 Technologies introduces the F8680 PC/Chip microprocessor. It is designed for use in notebook and handheld puters. The CPU is patible with the Intel 8086 and Intel 80186. The chip also includes a universal asynchronous receiver/transmitter, CGApatible display controller, and PCMCIA support, making it the most integrated chip ever produced to date. Price is US$45. [] October ? At the Microprocessor Forum, Advanced RISC Machines presents the 32bit ARM600 processor. It incorporates 33,494 transistors. [] [] (month unknown) ? HewlettPackard introduces the HP 95LX handheld puter. It runs MSDOS , includes Lotus 123 in 1 MB of ROM, displays MDA graphics, and weighs 11 ounces. 512 KB RAM is standard, with optional 128 KB and 512 KB RAM cards. Two AA batteries can power the system for six weeks. Price is US$699. [] ? Psion introduces the Psion Series 3 palmtop puter. It features 8 row by 40 column LCD display, 4 MHz NEC V30 processor, 384 KB ROM with operating system and seven builtin applications, 128 KB RAM, slot for Flash EPROM memory cards. It runs for up to 120 hours on two AA batteries. Size is x x 1 inches。 weight is pounds。 price is US$425. [] 1992 January 9 ? At the Winter Consumer Electronics Show, Apple Co