Radio Shack LK-1161 Changing the Tone of a Prerecorded Tune, Changing Keys, Tuning the Keyboard

Models: LK-1161

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￿￿￿￿ ￿￿ ￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

￿￿￿￿￿￿￿￿"￿"￿￿￿￿￿

You can change the tone before starting play or while play is already in progress.

1.Press TONE while the SONG indicator is on. Both the SONG and TONE indicators light and the display shows the number of the tone currently assigned.

2.Enter the number for the tone you want.

￿

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

￿￿￿￿ ￿￿ ￿￿￿￿￿

The keyboard automatically selects the key of middle C each time you turn it on. For added flexibility as you play, the keyboard lets you change (transpose) the musical key in which it plays. ￿

1.Hold down TONE and RHYTHM at the same time.

2.Within 5 seconds, press TEMPO ￿ or ￿

to lower or raise the key. Each time you press TEMPO ￿ and ￿, the number decreases or increases by 1 semitone.

As you raise the key, 1 is C , 2 is D, and so on. As you lower the key, 1is B, 2is B , –3is A, and so on.

￿￿￿￿￿￿ ￿￿￿￿￿￿￿ ￿￿￿￿ ￿￿￿￿

Key lighting turns on automatically when:

you turn on the keyboard.

you press DEMO to play demo tune.

you press SONG in the normal mode.

the power on alert function operates.

Press KEY LIGHT to turn off the key lighting if necessary. Press KEY LIGHT again to turn key lighting back on.

￿￿￿￿￿ ￿￿￿￿￿￿￿￿!￿￿￿"

Although your keyboard never goes out of tune, you can adjust its pitch to match other instruments or musical recordings. ￿

1.Hold down TONE and SONG at the same time.

2.Within 5 seconds, press TEMPO ￿ or ￿ to lower or raise the keyboard’s pitch. Each time you press the key, the number decreases or increases by 1 cent.

￿￿￿￿￿￿￿￿￿

Changing the Tone of a

Prerecorded Tune

You cannot change the tone of the two- hand tunes (number 85 through 99).

Selecting another tune switches the tone to the default tone of the newly selected tune.

When you change the tone for the prerecor- ded tunes, the newly selected tone stays in effect even after you switch to normal mode.

Changing Keys

You cannot change the key while a prerecorded tune is selected or playing.

The number on the display is the number of semitones to which the keyboard is set, compared to its default key. A semitone is a measurement that represents the acoustical interval between the tones of any

two keys on the keyboard. For example, the difference between C and C or B and B is one semitone. You can transpose the key down 6 semitones (to an F ) and up 5 semitones (to an F) — a full octave.

You can also use the number keypad to quickly raise the key. Simply press the semitone change value (1 to 5).

The keyboard automatically resets the key to the default value of 0 (middle C) each time you play a prerecorded tune (by pressing DEMO or SONG).

Each preset tone plays within a specified range. If a key change causes a note to exceed its range, the same note sounds in the nearest octave.

When you select preset tones 75 through 79 and 90 through 96 after changing the key, the keyboard split point changes according- ly (see “Keyboard Split Tones” on Page 5).

Changing the key does not affect the PERCUSSION (No. 99) preset tone or auto-accompaniment rhythm.

Tuning the Keyboard

You cannot tune the keyboard while a prerecorded tune is displayed or playing.

The number on the display is the number of cents to which the keyboard is currently tuned, compared to its default pitch. A cent is the measurement representing the acoustical interval between two tones. 1200 cents equal 1 octave. You can tune the keyboard to within 50 cents (101 levels) of its default pitch.

You can use the number keypad to raise the pitch by entering the cent change value.

The keyboard automatically resets the tuning pitch to the default value of 00 (cents) each time you turn off the keyboard or play the prerecorded tunes (by pressing DEMO or SONG).

Special Features

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Radio Shack LK-1161 owner manual Changing the Tone of a Prerecorded Tune, Changing Keys, Tuning the Keyboard

LK-1161 specifications

The Radio Shack LK-1161 is a notable entry in the realm of personal computing, particularly recognized for its balance of affordability and functionality. Released in the early 1980s, the LK-1161 was a powerful home computer that captured the attention of tech enthusiasts and casual users alike.

One of the standout features of the LK-1161 was its keyboard design, which catered to users looking for an efficient and pleasant typing experience. The integrated keyboard not only streamlined the design of the computer but also provided tactile feedback that many found appealing. This made the LK-1161 a popular option for those who required a reliable interface for programming and word processing.

The LK-1161 was powered by a robust Zilog Z80 microprocessor, a popular choice in many 8-bit computers of that era. This processor enabled the computer to handle various software applications efficiently, making it suitable for both home and educational use. With a clock speed of 4 MHz, users could enjoy a responsive system capable of multitasking between simple applications.

In terms of memory, the LK-1161 was equipped with 64KB of RAM, expandable to higher capacities with additional modules. This flexibility allowed users to adapt the computer to their needs, install more advanced software, or handle larger projects. The built-in BASIC programming language also provided a foundation for users to explore coding, making the LK-1161 a popular choice among budding programmers.

The graphics capabilities of the LK-1161 were modest compared to modern standards but were acceptable for its time. With support for several display modes, users could enjoy text and simple graphics, making the computer suitable for early gaming experiences and educational software.

Storage options included a built-in cassette interface for loading and saving programs, and users could also connect external floppy disk drives to enhance storage capabilities. This adaptability made it easy for users to manage data and software without relying solely on cassette tapes.

Connectivity was another strong point, with RS-232 serial ports allowing users to connect printers and modems. This facilitated data transfer and made it easier to print documents or connect to bulletin board systems.

Overall, the Radio Shack LK-1161 emerged as a versatile computing solution in its era, offering a way for individuals to engage with technology. With its blend of operational efficiency, user-friendly design, and expandability, it remains a memorable piece of computing history, symbolizing the early days of personal computing and its journey towards the modern era.