1. 程序：
程序，顾名思义，就是一个软件应用程序，它包括一组按顺序排列的指令，专门设计用于执行特定任务，并且使用不同的编程语言对计算机进行编程。
2. 说明：
指令，顾名思义，就是一组指令、文档或步骤，它们是处理器的单个操作，需要由处理器执行。
程序和指令之间的区别：
| Program | Instruction |
|---|---|
| Programs are simply set of instructions or computer code. | Instruction are simply order given to computer processor. |
| It instruct computer to carry out function such as calculation, formatting, etc. | It instruct computer to perform discreet action such as move, load decimal, etc. |
| Programs are collection of software applications especially designed to execute specific task. | These are set of machine language instructions that processor understand and perform. |
| Types of programs include game programs, word processors, web browsers, graphic programs, etc. | Types of instruction includes integer instruction, floating-point instruction, flow control instruction, etc. |
| Programs are given to computer by computer programmer in specific programming language. | Instructions are given to computer using keyword or input device by human beings. |
| Programs are generally stored in secondary storage devices such as hard disks and when we execute program, it gets copied on main memory. | Instructions are generally stored on hard disk or any other storage device and are performed until they are executed by user. |
| These are hard to understand and create. | These are easy to understand and create. |
| Compilers are used by computer to translate program written in high-level language to machine code and then it can be used directly by computer. | Operating system or software’s are used by computer to translate user commands into human readable format. |