void DelayUs(unsigned char Time) { unsigned char a; for(a=0;a<Time;a++) { NOP(); } }

This code snippet defines a function named "DelayUs" that takes an unsigned character (8-bit) argument named "Time". The purpose of this function is to introduce a delay in microseconds (hence the "Us" suffix) using a loop that executes "NOP()" (no operation) instructions.

Inside the function, a variable "a" is declared and initialized to zero. Then, a "for" loop is used that will run as many times as the "Time" argument specifies. Inside the loop body, a single NOP() instruction is executed. This instruction does nothing but take up one clock cycle of the processor. Therefore, as the loop iterates, it introduces a delay that is proportional to the value of "Time".

It is worth noting that this implementation of delay is not very precise or accurate, as it depends on the processor clock speed and other factors that could affect the execution time of the NOP() instruction. Additionally, this function assumes that the microcontroller is running at a clock frequency of at least 1 MHz, as a single NOP() instruction takes one clock cycle to execute.