Tandy 1400LT - System Overview; External View

1-1 System Overview
The Tandy 1400LT is a fully functional PC compatible.
The Tandy 1400LT represents a remarkable breakthrough in portable computer technology. Its 8088-equivalent
microprocessor (NEC-V20) has a 7.16 MHz clock speed
(VS. 4.77MHz for other PC-compatible laptops). And the
768K RAM is enough memory to run all of your important applications. The Tandy 1400LT comes with two 720K
3 1/2” built-in disk drives. The Tandy 1400LT features a high-quality backlit liquid crystal display. The 80-
character by 25-line resolution. The Tandy 1400LT also includes a parallel printer adapter, an RGB monitor output,
composite monitor output, Standby mode, real-time clock and RS-232C serial interface. It also supports an external
keyboard and handy, removable battery pack with Low-battery warning.
1-2 External View
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Keyboard. The keyboard features 76 typewriter-keys and Special-Function keys.
LCD Unit. The Tandy 1400LT display has 25 lines that allow 80 character on each line.
Power Switch. Push this switch to turn the power ON or OFF.
Display Adjustment Dial. This control adjusts the contrast of the LCD Display relative to the viewing angle.
NUM, CAPS, Scroll Lock Indicator. These RED LEDs will illuminate when NUM-Key, CAPS-Key or Scroll
Lock-key are held down.
Low Battery Indicator. Before the Tandy 1400LT’s operation batteries become exhausted, this indicator will
illuminate.
(refer to [Page 1-81: Battery Voltage Warning)
Standby-Mode Indicator. When nothing is input for about 1 - 239 minutes (software selectable) after the last
keying in the system automatically turns to standby mode. In standby mode system indicates a GREEN LED
light.
Boot exchange switch. When you use an external disk drive, you can change the drive designations. Use this
switch with the boot select switch set to INT, the drives are designated as follows.
Left Drive
..................................................... Drive A
Right Drive
.................................................. Drive B
External Drive
............................................. Drive C
with the boot select switch set to EXT, the drives are designated as follows.
Left Drive
..................................................... Drive C
Right Drive
.................................................. Drive B
External Drive
............................................. Drive A
External Power Adapter Connector. Connect the appropriate end of AC Power Adapter.
10. Monitor (LCDKRT) Selector. This selector allows you to select either a internal LCD or external CRT. When
you start the system with the monitor switch in the OFF position, the default display is LCD. Set the switch to
ON before turning on the system to use a CRT as the default display.
printer cable.
11. Printer Connector. For hard-copy printouts of information, attach parallel printer to this connector, using a
12. RGB Connector. To use an RGB direct-drive color monitor, connect its cable to this connector.
13. Video Connector. To use a composite CRT monitor, connect the cable to the connector.
14. RS-232C Connector, Attach a DB-25 cable to this connector when you need to receive or transmit serial
15. External disk Drive connector. To use an optional external floppy disk drive, connect the cable to the
16. External keyboard Connector. To use a Tandy Enhanced keyboard (cat. No. 25-4038) or an IBM PC-
information.
connector.
compatible keyboard, connect the cable to the connector. And select EXT during Setup mode.
If you are using a
Tandy Enhanced keyboard, it must be set to IBM XT compatible mode.
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