If an everyday part of your routine involves working with files stored on a remote FTP or SFT server, then you already know just how painful it can be. If you're still using a standard locally installed FTP client or, worse still, a basic Web-based solution such as those provided by many hosting companies, you're hardly relying on the most efficient method. A standard FTP client, Web-based or otherwise, typically leaves a lot to be desired unless all you need to do is very occasionally browse a remote directory or download just a file or two.
Computer software or simply software is any set of machine-readable instructions that directs a computer's processor to perform specific operations. Computer software contrasts with computer hardware, which is the physical component of computers. Computer hardware and software require each other and neither can be realistically used without the other. Using a musical ****ogy, hardware is like a musical instrument and software is like the notes played on that instrument.
Computer software includes computer programs, libraries and their associated documentation. The word software is also sometimes used in a more narrow sense, meaning application software only.
At the lowest level, executable code consists of machine language instructions specific to an individual processor – typically a central processing unit (CPU). A machine language consists of groups of binary values signifying processor instructions that change the state of the computer from its preceding state. For example, an instruction may change the value stored in a particular storage location inside the computer – an effect that is not directly observable to the user. An instruction may also (indirectly) cause something to appear on a display of the computer system – a state change which should be visible to the user. The processor carries out the instructions in the order they are provided, unless it is instructed to "jump" to a different instruction, or interrupted.