43-1110.fm Page 13 Wednesday, August 18, 1999 8:22 AM

CONNECTING AND CHARGING THE BATTERY PACK

The ET-1110 comes with a rechargeable nickel-cadmium battery pack in the handset but not connected. Before using your phone, you must connect the bat- tery pack and then charge it for about 15 hours.

1.Press down and slide off the com- partment cover as shown.

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

CHARGE

Indicator

Recharge the battery pack when appears on the handset’s display.

Low Battery Indicator

2.Plug the battery pack’s connector into the socket in the compartment. The connector fits only one way.

Note: For easier battery pack con- nection, lift it out of the compart- ment, insert its connector into the socket, then replace the battery pack inside the compartment.

3. Replace the cover.

Notes:

You can place the handset on the base face down or face up without removing the belt clip. If you want to use the hanging hole on the back of the handset to place the handset on the wall-mounted base face-up, re- move the belt clip (see “Removing the Belt Clip” on Page 27). However, the battey pack will not fully charge in this position.

When you first use the phone after charging or recharging the battery pack, the phone might not work and you might hear an error tone when you press TALK. If this happens, re- turn the handset to the base for about 6 seconds. This resets the se- curity access protection code.

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Radio Shack ET-1110 owner manual Connecting and Charging the Battery Pack

ET-1110 specifications

The Radio Shack ET-1110, a remarkable handheld electronic device from the 1980s, is a notable example of early consumer technology that focused on portability and user-friendliness. Originally released as a combination of a pocket-sized calculator and a basic programming tool, the ET-1110 appealed to a wide range of users, from students to professionals.

One of the main features of the ET-1110 is its sleek, compact design. This device was designed to be lightweight and portable, making it easy to carry around in a bag or even in a pocket. The ergonomic layout included a comfortable keypad that allowed users to input data quickly and efficiently. Its liquid crystal display (LCD) made it easy to read under various lighting conditions, a significant advantage at the time.

The ET-1110 was equipped with various functions that catered to both simple arithmetic operations and more advanced mathematical calculations. It featured functions like addition, subtraction, multiplication, and division, alongside square roots and exponentiation, making it a versatile tool for academic and professional use. Additionally, this device supported a limited amount of programming capabilities, allowing users to store and execute simple sequences of commands – an early introduction to what would become a mainstay in personal computing.

In terms of technology, the ET-1110 used CMOS (Complementary Metal-Oxide-Semiconductor) technology, which contributed to its energy efficiency and long battery life. The device typically operated on a small number of batteries, enabling extended use without frequent replacements. This practicality made it an appealing choice for users who needed reliable performance on the go.

Another notable characteristic of the ET-1110 was its affordability, a hallmark of Radio Shack's strategy to make technology accessible to a broader audience. This pricing approach, combined with the device's functionality, made the ET-1110 a popular choice among budget-conscious consumers looking for reliable electronic tools.

The Radio Shack ET-1110 stands out not only as a product of its time but also as a precursor to the sophisticated portable computing devices that would emerge in the following decades. Its blend of practicality, technology, and ergonomic design reflects an era on the brink of massive advancements in personal electronics, marking a significant step in the evolution of handheld devices.