is a standard modem considered to be a computer hardware
Nope - it's hardware. The screen incorporates a special layer that detects whens someone touches it.
A monitor is not normally considered hardware, the internal components of a computer are considered hardware.
Hardware
The screen - or a printer.
Peripheral
Computer science is the study of computers (particularly software). Computer hardware is the physical parts of a computer. Hardware may include a screen, a hard drive, a mouse, a keyboard, RAM, etc. Basically, computer science is something people study, and computer hardware is what a computer is physically made out of.
Yes.
no
It is software because it is on your computer and you cant touch it. If you can pick it up then it is hardware but if you cant touch it and its on your computer screen (eg. Windows) then it is software.
DOS
There are many pieces of computer hardware equipment that are considered output devices. Some examples of computer output devices are speakers, headphones, monitors, and printers.