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CARE AND MAINTENANCE

Your RadioShack CT-502 Flip-Style Handheld Cellular Tele- phone with Silent Vibrating Alert is an example of superior design and craftsmanship. The following suggestions will help you care for your phone so you can enjoy it for years.

•Keep the phone and all of its parts and accessories out of the reach of children.

•Keep the phone dry. Liquids might contain minerals that corrode electronic circuits.

•Do not use or store the phone in dusty, dirty areas. Its moving parts can be damaged.

•Do not store the phone in hot areas. Temperature extremes can shorten the life of electronic devices, dam- age batteries, and warp or melt plastic parts.

•Do not store the phone in cold areas. When the phone warms up (to its normal operating temperature), mois- ture can form inside the phone, which could damage the phone’s electronic circuits.

•Do not drop, knock, or shake the phone. Rough handling can break internal circuit boards.

•Wipe the phone with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning sol- vents, or strong detergents to clean your phone.

Modifying or tampering with the phone’s internal components can cause a malfunction and invalidate your phone’s warran- ty and void your FCC authorization to operate it. If your phone is not performing as it should, take it to your local Ra- dioShack store for assistance.

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Radio Shack CT-502 owner manual Care and Maintenance
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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.
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