The first operating system (OS) code can be traced back to the 1950s, specifically to IBM's General Motors Operating System (GMOS), which was developed in 1956 for the IBM 704 mainframe. However, it was not written in modern programming languages like C or Python but in assembly language, as higher-level programming languages were not yet common. Assembly Example (Simplified) START: LOAD JOB_QUEUE ; Load the queue of tasks to be processed CHECK_MEMORY ; Verify memory allocation for the job IF MEMORY_FULL, HALT ; Stop if insufficient memory LOAD JOB ; Load the next job into the CPU EXECUTE ; Execute the job STORE RESULTS ; Save the results back to memory RETURN_TO_QUEUE ; Return to the job queue for the next task LOOP START ; Repeat the process Pseudocode for the First OS (GMOS-style) START_OS: Ini...