1. The score of the little apple calculator is as follows (press the following numeric keys from left to right in each row, as do the following songs): 645265452658634343445654654888+0986 65465888.

2. The music score of Ode to Joy calculator is as follows: 334554321123322 334543212321122312343655.

3. The music score of the fairy tale calculator is as follows: 5543343 3434321356 665243135666 52432123661.

4. Welcome to Beijing. The notation of calculator is as follows: 3532323 32613221612352 3651213532323 326132.

2 16 12352 36562 1 2 16 12352 36553 232 1562 6322 135

5. The score of the artist's calculator is as follows: 535353124325 53531243212244325 24325 53531.

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Calculator is an electronic machine invented by modern people that can perform digital operations.

Modern electronic calculator is a hand-held electronic machine that can perform mathematical operations. It has an integrated circuit chip, but its structure is much simpler than that of a computer. Can be said to be the first generation of electronic computers (computers), with weak functions, but more convenient and cheaper. It can be widely used in business transactions and is one of the necessary office supplies. In addition to displaying the calculation results, there are often overflow instructions, error instructions and so on. The calculator is powered by an AC converter or a battery, which can be charged by an AC converter or a solar converter. In order to save electricity, calculators all use large-scale integrated circuits made by CMOS process.