No! windows 7 is an operating system that runs in a computer, it is a part of Microsoft Windows family. There are several types of windows 7 such as home premium. ..
There are no hardware firewalls built into Windows 7, but from Windows 7 and on, Windows Defender is integrated into the system.
No, it is software
No, if it is compatible with Windows 7 Professional it will be compatible with all versions of Windows 7.
The microprocessor is a piece of hardware, not software. Windows 7 doesn't supply a microprocessor.
http://www.everyjoe.com/windowsvistaweblog/windows-7-minimum-requirements/
Windows 7 and windows 98 are both operating systems. What matters is the hardware platform. To answer the question, probably not. Most hardware platforms made in the days of windows 98 will not be sufficient for the needs of the windows 7 operating system.
Windows 7 is software because you install it on the computer. Hardware is physical and you can touch it with your fingers. EG printer. A printer is hardware because you can touch it.
It depends on what hardware you've got running it.
No as no software is compulsory
Windows 7 ProfessionalWindows 7 Home Premium
Software. An operating system, specifically.
No reason why not - provided you have the correct driver(s) for the hardware installed in Windows 8.