This depends on what area you are talking about, almost every component in a computer has different standards around it. The CPU is more than likely a x86, or a x64 processor, the ram is a DDR version, the slots are PCI, PCI-express or AGP, and so on...
Tcp/ip
Today.
The computers that are most popular are Windows computers. Windows based computers are used in most businesses and are widely accepted as the standard in schools as well.
DDR2 RAM is not the standard anymore. Until about 2007-2008 it was very commonly used. Today DDR3 is the standard RAM. Though DDR4 is in the works and will debut sometime soon.
The sentence 'Computers and printers are standard equipment in most classrooms' is a compound sentence because it has more than one subject, "Computers and printers".
cache
5th generation
Most systems will come with BASH installed.
No reason why not - provided you have the necessary driver for the printer installed on the notebook. Almost all printers use the standard USB connection these days. Windows development usually means most of the popular printers are already supported by the operating system.
Republicans... because McKinley ran on a platform of supporting the gold standard and high tariffs
CMOS memory
Microsoft