A batch file is a kind of script file in DOS, OS/2 and Windows. It consists of a series of commands to be executed by the command line interpreter, stored in a plain text file.

Assembly language programs are translated into machine language by a program called an assembler.

In computing, booting is the initialization of a computerized system. The booting process can be "hard", after electrical power to the CPU is switched from off to on (in order to diagnose particular hardware errors), or "soft", when those power-on self-tests (POST) can be avoided.

Microsoft Windows is a meta family of graphical operating systems developed, marketed and sold by Microsoft. It consists of several families of operating systems, each of which cater to a certain sector of the computing industry.

In computing, echo is a command in DOS, OS/2, Microsoft windows, Singularity, UNIX and Unix-like operating systems that place a string on the computer terminal.

Note: It is typically used in shell scripts and batch files to output status text to the screen or a file.

MS-DOS is a command-driven Operating System.DOS refer to operating system software used in most computers that provides the abstraction and management of secondary storage devices and the information on them.

Note:- Such software is referred to as a disk operating systemwhen the storage devices it manages are made of rotating platters, such as floppy disks or hard disks.

Source code is any collection of computer instructions written using some human-readable computer language, usually as text.

The kernel is the part of operating system that interacts directly with the hardware of computer, through device drivers that are built into the kernel. Kernel performs I/O service. 

Java uses a two-step compilation process. Java uses a compilerto convert source code into bytecode. This bytecode is not amachine code. Later for execution JVM platform uses aninterpreter to convert these bytecodes into machine language.

Dennis MacAlistair Ritchie was an American computer scientist. He created the C programming language.