Part of the Microprocessors glossary: CPU (central processing unit) is an older term for processor and microprocessor, the central unit in a computer containing the logic circuitry that performs the instructions of a computer's programs.art of the Microprocessors glossary: CPU (central processing unit) is an older term for processor and microprocessor, the central unit in a computer containing the logic circuitry that performs the instructions of a computer's programs.
What You Need To Know... 1  The Grade of Padding you select must MATCH the Grade of Carpet you select. 2  Typical Cost for a 6 to 8-pound density Rebond pad is about $3.50 - $5.50 per square yard or about 39 to 45 cents per square foot.
A rug pad also protects hardwood floors from the grit, dust and dirt trapped beneath the rug that scratches the floor finish. Some area rugs are made with a type of backing that scratches or discolors the floor.