43-1110.fm Page 19 Wednesday, August 18, 1999 8:22 AM

CHANGING THE

CHANNEL

The ET-1110 scans 20 channels (fre- quency pairs used between the base and the handset) and automatically selects a clear channel each time you make or re- ceive a call.

CH and the current channel number ap- pear on the display for about 15 seconds when you make or receive a call.

If you hear other conversations or exces- sive noise during a call, press CHANNEL to select a different channel. The select- ed channel appears on the display.

Note: If the handset is too far from the base, the channel might not change. Move closer to the base and try again.

USING REDIAL

You can quickly redial the last number di- aled. Simply lift the handset and press TALK. When you hear the dial tone, press REDIAL. The number appears on the display as the phone dials it.

Notes:

•The redial memory holds up to 24 digits, so you can redial long- distance as well as local numbers.

•We recommend you not use REDIAL to dial numbers that include a tone entry. This could result in a wrong number being dialed. (See “Using Tone Services on a Pulse Line” on Page 20.)

•The redial memory does not store a flash entry or any digits entered af- ter you press FLASH (see “Using Flash”).

USING FLASH

FLASH performs the electronic equiva- lent of a switchhook operation for special services, such as Call Waiting.

For example, if you have Call Waiting, press FLASH to answer an incoming call without disconnecting the current call. Press FLASH again to return to the first call.

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Radio Shack ET-1110 owner manual Changing Channel, Using Redial, Using Flash
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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.
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