If you have 300$ Budget and looking for any gaming monitor, then you can choose Sceptre E225W-19203R and Acer Gaming Monitor monitor. Both these monitors are really awesome and have great response rate. Although Here is reference article for you. You can check it out. https://bestofmonitor.com/10-best-gaming-monitors-under-100/

A bus is a subsystem that is used to connect computer components and transfer data between them. For example, an internal bus connects computer internals to the motherboard.

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The C Programming Language By Brian W. Kernighan and Dennis M. Ritchie is imo still the best book around. It's quite old but one of its authors is the very creator of the language.and the book in general is incredibly well written and has a ton of exercises.