section-I The improvement of computer hardware theory is summarized by which law.? Metcalf's law Bill's Law Grove's law Moore's First Law What is the color of the Apple? Red Yellow The most widely used computer device is. Solid state disks External hard disk Internal hard disk Mouse _______ are software which is used to do particular task. Operating system Program Data Software In which year of First World War Germany declared war on Russia and France? 1914 1915 1916 1917 Page 1 out of 2