1 Central processing unit (CPU), the hardware within a computer that executes a program. 2  if designed conforming to the Von Neumann architecture, it contains a processing unit and a control unit. 3  Microprocessor, a central processing unit contained on a single integrated circuit (IC). Central processing unit (CPU), the hardware within a computer that executes a program. 2  if designed conforming to the Von Neumann architecture, it contains a processing unit and a control unit. 3  Microprocessor, a central processing unit contained on a single integrated circuit (IC).
Food grade titanium dioxide is really common and not so nano. The titanium dioxide used by Dunkin' Brands and many other food producers is not a new material, and it's not really a nanomaterial either. Nanoparticles are typically smaller than 100 nanometers in diameter.Yet most of the particles in food grade titanium dioxide are larger than this.itanium dioxide (which isn't the same thing as the metal titanium) is an inert, insoluble material that's used as a whitener in everything from paper and paint to plastics.
References: Titanium dioxide is the subject of new controversy, yet it is a substance as old as the earth itself. It is one of the top fifty chemicals produced worldwide. It is a white, opaque and naturally-occurring mineral found in two main forms: rutile and anatase. Both forms contain pure titanium dioxide that is bound to impurities. Titanium dioxide is chemically processed to remove these impurities, leaving the pure, white pigment available for use. Titanium dioxide has a variety of uses, as it is odorless and absorbent. This mineral can be found in many products, ranging from paint to food to cosmetics. In cosmetics, it serves several purposes. It is a white pigment, an opacifier and a sunscreen.