✔✔✔✔Ur answer✔✔✔✔⭐⭐Software includes process management routines memory management routines ✔I/O✔ control routines FILE management routines. ⭐⭐This LAYER consists of compilers ASSEMBLERS linker etc. ✔•processing, ✔•multiprogramming, ✔•timesharing, ✔•personal COMPUTING,✔•distributed systems.✔
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