Book-to-Bill Ratio.IPC (1) (InterProcess Communication) The exchange of data between one program and another either within the same computer or over a network. It implies a protocol that guarantees a response to a request. (Northbrook Northbrook, village (1990 pop. 32,308), Cook co., NE Ill., a suburb of Chicago; settled 1836. It was incorporated as Shermerville in 1901 and was reincorporated as Northbrook in 1923. , IL) has released the U.S. PCB PCB: see polychlorinated biphenyl. PCB in full polychlorinated biphenyl Any of a class of highly stable organic compounds prepared by the reaction of chlorine with biphenyl, a two-ring compound. industry book-to-bill ratio Book-to-Bill Ratio The technology industry's demand-to-supply ratio for orders on a "firm's book" to number of orders filled. Notes: This ratio tells whether the company has more orders than it can deliver (if greater than 1), has the same amount of orders that it can for December December: see month. 2000 as 0.92. Sales billed (shipments) in December 2000 increased 14.4 percent over December 1999, and orders booked for December 2000 decreased 13.2 percent over December 1999. Compared to 1999, 2000 bookings of PCBs are up 22.4 percent year to date. Shipments of PCBs in 2000 are up 18.3 percent year to date. The information provided includes data for both rigid and flexible PCB manufacturers who participate in IPC's monthly statistical program. These participants represent more than 40 percent of the U.S. domestic PCB market.
Sales Billed: Orders Booked:
(percentage change) (percentage change)
Oct. Nov. Dec. Oct. Nov. Dec.
+24.8% +19.7% +14.4% +19.2% +5.7% -13.2%
Dec. '99 1.05
Jan. '00 1.08
Feb. '00 1.15
Mar. '00 1.22
Apr. '00 1.22
May. '00 1.23
June '00 1.18
July '00 1.21
Aug. '00 1.20
Sept. '00 1.18
Oct. '00 1.09
Nov. '00 1.01
Dec. '00 0.92
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