The symbol f (x) = appears on the display of CASIO electronic calculator. Which key can be pressed to clear it

The symbol f (x) = appears on the display of CASIO electronic calculator. Which key can be pressed to clear it

There is a recovery guide on the cover of CASIO electronic calculator. You can find that button to clear it

Scientific calculator is pressed by classmate blue background, how to adjust back

If your calculator is FX es or FX es plus series, the calculator may enter the self check state (FX es series press shift 7 on at the same time, FX es plus press shift 7 on at the same time, and then press 9 to enter the self check state)
Press on to restore

What is a calculator made of

Electronic calculators are generally composed of power switches, (input and output devices), and internal circuits

How to use the preset number method to make 74ls161 form a 24 ary counter

Counting range: 0 ~ 23. Ls161 is preset synchronously and cleared asynchronously. The feedback value difference between the two methods is 1. The clearing method is to count to 24 and clear