掌上电脑发展编年史（英文版）

• Palm Computing introduces the PalmPilot professional hand-held PC. It features Palm OS 2.0, 3.25 x 2.5 inch 160x160 pixel monochrome LCD display, 1-MB RAM, stylus, two AAA batteries. Size is 4.7 x 3.2 x 0.7 inches; weight is 6 ounces; price is US$369. [98.56]
• Philips Mobile Computing Group introduces the Velo 1 hand-held PC. It features Windows CE 1.0, 4.5 x 2.75 inch 480x240 pixel 4-shade grayscale LCD display, 4-MB RAM, stylus, keyboard, DRAM slot, Flashcard slot, ROM socket slot, 19.2-Kbps modem, two AA batteries, rechargeable battery pack. Size is 6.25 x 3.75 x 1.0 inches; weight is 14.8 ounces; price is US$399.99. [98.57]
• Sharp Electronics introduces the ZR-3500X hand-held PC. It features Synergy operating system, 2.25 x 3.5 inch 320x240 monochrome LCD display, 2-MB RAM, stylus, keyboard, 14.4-Kbps modem, two AA batteries. Size is 6.3 x 3.5 x 1.0 inches; weight is 11.8 ounces; price is US$399. [98.57]
• Apple Computer introduces the Apple MessagePad 2100 hand-held computer. It features Newton 2.1 OS, 8-MB ROM with various applications, 4-MB DRAM, 4-MB flash RAM, optional 2-4-MB flash PC Cards, two Type II PC Card slots, 16-shade 4.9 x 3.3 inch display, four AA batteries, and a stylus. Weight is 22.4 ounces; size is 1.1 x 4.7 x 8.3 inches; price is about US$1150. [97.103]
• Casio introduces the Casio Cassiopeia A-20 hand-held computer. It features Windows CE 2.0, 8-MB RAM, 8-MB ROM, 6.2-inch wide 640x240 pixel 4-gray-scale display, keyboard, serial port, Type II PC Card slot, Compact Flash card slot, and two AA batteries or litium ion battery pack. Price is about US$600; weight is 15.2 ounces. [97.108]

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