Introduction - If you have any usage issues, please Google them yourself
The length of the byte array 8 (unsigned), search for more than 42H unsigned number and the number of bytes stored in the up unit; 42H is equal to the unsigned number of bytes stored in the equa unit; less than 42H unsigned number of bytes stored in the unit down in.
The program displays the value of up equa down.
Eight numbers: 31H, 21H, 42H, 52H, 87H, 23H, 98H, 01H