17-1111.fm Page 24 Wednesday, July 21, 1999 2:23 PM

Menu Functions List

Display Shows

Function Description and

See

Default Setting

 

Page

 

 

 

 

 

 

 

 

 

 

Signal Mtr

Turns off/on the signal

On

26

 

strength meter

 

 

 

 

 

 

One Min Timr

Sets the phone to sound

Off

26

 

a tone once each minute

 

 

 

during a call

 

 

 

 

 

 

Indiv Timr

Sets the call timer to dis-

Off

53

 

play automatically during

 

 

 

a call

 

 

 

 

 

 

Scrpad Tone

Turns off/on the keypad

On

27

 

tones (heard by the other

 

 

 

party)

 

 

 

 

 

 

Ringer Style

Sets the phone to use

1

28

 

one of nine different

 

 

 

ringer styles

 

 

 

 

 

 

Ring Or Vib Sel

Sets the phone to vibrate

Ring

29

 

or ring only, both vibrate

Only

 

 

and ring, or only display

 

 

 

Call (instead of ring or

 

 

 

vibrate) to alert you of a

 

 

 

call

 

 

 

 

 

 

Keypad Tone

Turns off/on the keypad

On

30

 

tones (that you hear)

 

 

 

 

 

 

Auto Ansr

Sets the phone to auto-

Off

31

 

matically answer after

 

 

 

two rings

 

 

 

 

 

 

MultKey Ansr

Sets the phone to answer

Off

32

 

a call when you press

 

 

 

one of several keys

 

 

 

 

 

 

24

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Image 24
Radio Shack CT-502 owner manual Menu Functions List

CT-502 specifications

The Radio Shack CT-502 is a remarkable device that stands out in the world of vintage technology, particularly known for its versatility and functionality as a portable computer. Launched during a time when personal computing was rapidly evolving, the CT-502 embodies the spirit of innovation that characterized the early days of computing technology.

At its core, the Radio Shack CT-502 comes equipped with a Zilog Z80 microprocessor, a staple of many early personal computers that provided solid performance for its time. This CPU offers an 8-bit architecture with a clock speed of 2.5 MHz, allowing users to execute tasks efficiently. The CT-502 features a memory capacity of 64 KB of RAM, which can be expanded, making it suitable for various applications, from basic text processing to simple programming tasks.

One of the standout features of the CT-502 is its dual built-in floppy disk drives, which enable users to easily load and save data. This was particularly advantageous during the era when storage solutions were evolving, as it allowed for quick access to programs and files. The 5.25-inch floppy disks used by the CT-502 became a standard for many personal computing applications, ensuring wide compatibility with software.

The device also features a compact, built-in keyboard that boasts a full set of function keys, essential for efficient data entry and navigation. Complementing the keyboard is a 40-character by 24-line monochrome display, which provides a clear view of text and applications, ideal for programming and document creation.

In terms of connectivity, the CT-502 includes a variety of ports such as serial and parallel interfaces, allowing users to connect external devices like printers and modems. This functionality enhanced the versatility of the system and integrated it into the growing network of computers.

Moreover, the Radio Shack CT-502 runs on the TRS-DOS operating system, designed specifically for the TRS line of computers. This operating system was user-friendly for its time, enabling users to manage files and perform various tasks without deep technical knowledge.

In summary, the Radio Shack CT-502 represents a significant milestone in early computing history, offering a combination of portability, ease of use, and expansion capabilities. With its reliable hardware, user-friendly interface, and diverse connectivity options, it remains a fondly remembered piece of technology that paved the way for modern personal computers.