43-696a.fm Page 13 Friday, August 13, 1999 12:48 PM

4.To charge the battery, simply place the handset on the base. The CHARGE indicator on the base lights.

Charge Indicator

Recharge the battery when the BATT LOW indicator flashes.

Notes:

•If the CHARGE indicator does not light when you place the handset on the base, be sure the battery and AC adapter are correctly and securely connected.

•When you first use the phone after charging or recharging the battery, the phone might not work and you might hear an error tone. If this happens, return the handset to the base for a few seconds.

•If the BATT LOW indicator does not light, but the phone does not work, recharge the battery. (The battery charge might be too low to light the indicator.)

•If the battery pack gets weak dur- ing a call, the handset sounds a beep every 30 seconds, and the BATT LOW indicator flashes. If this happens, you must recharge the battery before you can make another call.

•About once a month, fully dis- charge the battery by keeping the handset off the base until the BATT LOW indicator lights. Other- wise, the battery loses its ability to fully recharge.

•Using a pencil eraser, clean the charging contacts on the handset and the base about once a month to make sure they are not dirty or tarnished.

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Radio Shack ET-596 owner manual Charge Indicator
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ET-596 specifications

The Radio Shack ET-596 is a distinguished electronic device that gained recognition in the realm of personal gadgets during the 1980s. As a programmable calculator, the ET-596 combined extensive functionality with user-friendly design, catering to engineers, students, and hobbyists alike.

One of the standout features of the ET-596 is its robust computing power. Equipped with an advanced microprocessor for its time, this calculator is able to perform a wide range of mathematical operations, from simple arithmetic to complex trigonometric functions. The device boasts a generous number of built-in functions, enabling users to execute calculations in various fields, including finance, engineering, and science, thereby making it a versatile tool for anyone who relies on numerical analysis.

The ET-596 is designed with a large, easy-to-read LCD display, which presents numbers and calculations with clarity. This aspect enhances usability, reducing eyestrain during prolonged use and facilitating quick reference in both educational and professional environments.

Another defining characteristic of the ET-596 is its programmability. Users can create and store custom programs, allowing for repetitive calculations and complex problem solving to be executed effortlessly. This feature not only elevates productivity but also positions the device as an indispensable asset for engineers and researchers performing regular computational tasks.

The Radio Shack ET-596 also includes several memory functions, which allow users to store values temporarily, further enhancing its functionality. This memory capability is particularly useful in multi-step calculations, where retaining previous results is crucial for final outcomes.

In terms of design, the ET-596 features a sleek, compact form factor, making it easily portable. Its robust construction ensures durability and longevity, which is a hallmark of Radio Shack products. The device is powered by standard batteries, ensuring that it remains operational without the frequent need for charging.

In conclusion, the Radio Shack ET-596 remains a significant technological artifact from the 1980s, representing a blend of sophistication and practicality in personal computing. With features like programmability, multifunctionality, and efficient memory use, it set a benchmark for future portable calculators. Even today, enthusiasts and collectors alike recognize its enduring legacy in the evolution of personal electronic devices.
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