In order to mine a particular cryptocurrency, you will need a hardware suited to mine that cryptocurrency. Depending on a coin you will either need an ASIC miner (computer exclusively designed for mining specific coins) or PC with powerful GPU (graphics card) or CPU (processor) in some cases.
Each coin requires different hardware (depending on the algorithm used) that may or may not be used to mine other cryptocurrencies! You must always ensure that your mining equipment is suitable to mine your chosen cryptocurrency. Mining cryptocurrency with unsuitable hardware will either be really unprofitable or won’t work at all.