#excel #formula #sheet #functions #computer #cpu #information #knowledge #info #study #computerstudy #pc #functionkey #numpad #keyboard #mouse #joystic #device #internet #searching #surfing #playing #gaming #learning #languages #csharp #c+c #java #python #enternetexplore #microsoft #IT #webdeveloper #developer #design #photoshop #ai #facts #factz #didyouknow #doyouknow #data #memory #harddisk #laptop