71.   Yesterday, Micron said it will finish converting its memory-chip plants to eight-inch silicon wafers by the end of this year.

72.   Bowing to business pressure, Taiwan eased a ban last month to allow Taiwanese chipmakers to make less advanced silicon wafers in China.

73.   It will make semiconductor disks using a technology that lets companies make more chips from a silicon wafer, thus lowering production costs.

74.   Light passes through a mask of the chip design and is projected onto the silicon wafer.

75.   Lithography systems are used to trace patterns of silicon wafers that eventually become the circuitry of semiconductor chips.

76.   Mitsubishi cited slow sales of the silicon wafers it manufactures at two Salem plants.

77.   Nikon holds a dominant share of the world market for steppers, which etch the circuitry in silicon wafers in the process of making semiconductors.

78.   Silicon wafers are a key component of integrated circuits used in computers and other electronics devices.

79.   Silicon wafers are used to make integrated circuits, which are components of computers and other electronic devices.

80.   St. Peters, Miss.-based MEMC makes blank silicon wafers, from which computer memory chips are made.