মোবাইল ফোনে ব্যবহৃত দুইটি অপারেটিং সিস্টেম এর নাম লিখুন ।
Software is a set of instructions, data or programs used to operate computers and execute specific tasks. It is the opposite of hardware, which describes the physical aspects of a computer. Software is a generic term used to refer to applications, scripts and programs that run on a device.