The first commuters were programed using _________

Answer Details

Before assembly languages and high-level programming languages were developed, computers could only be instructed using the language their hardware directly understood: sequences of binary digits, \(0\)s and \(1\)s, representing electrical on/off states in the circuitry. This is known as machine language.

Early programmers had to write and enter these binary instructions directly, often through switches, punched cards, or punched tape, with no translation layer between the human programmer and the hardware. This was extremely tedious and error-prone, which is precisely why easier alternatives such as assembly language (using short mnemonic codes) and later high-level languages were invented, each requiring a translator (assembler, compiler, or interpreter) to convert them down into machine language for the processor to execute.

Assembly language, source code, and object code all came later as improvements built on top of machine language, and each of them still ultimately depends on being translated into machine language before a processor can execute the instructions. This confirms that machine language was the original, most basic form of programming available.

Exam reminder: machine language is the earliest and most fundamental programming language, since it is the only one a processor executes without any translation step.