Abstract: A character printing system in an electronic data processing apparatus is provided that is adapted for printing language characters in response to numerical value coded data entered through numeral keys of a keyboard, each character being represented by a respective numerical value coded data of a predetermined convention, wherein said language characters comprises at least two kinds of language characters, such as upper case type alphabet characters and lower case type alphabet characters, or English alphabet characters and Japanese kana characters, or the like, and the keyboard includes language character code entry mode key and language character kind specifying key as well as numeral keys and ordinary commanding keys, and a printer operable responsive to a storage for storing information entered through said keyboard is controlled by a print control responsive to said storage, whereby said printer is controlled to selectively print numerical value coded data in a kind of language characters specified by t

Abstract: A combustion control system for a rotary kiln with a suspension preheater including a calcining burner wherein slurries of Portland cement raw materials, lime slurries, alumina, magnesia or the like are filtered into a cake, the cake being burned in the kiln with the suspension preheater.

Abstract: A memory clear method useful to clear a plurality of words contained in a memory from a specific address to an address at the same time. An address register is provided for this purpose. In one preferred form, the address register is responsive to a CX key indicating a memory clear operation, a , key indicating start of the memory clear operation and 0 to 9 digit keys identifying a memory address for the memory clear operation.

Abstract: Disclosed is a method for controlling the operation of an apparatus for preheating and calcining cement materials. Noncombustible cement materials are introduced into a preheater while cement materials containing combustible materials, into a calciner immediately at the downstream of the preheater.

Abstract: Disclosed is a method for calcining pulverized raw cement materials or alumina materials prior to a burning process, a first kind of pulverized materials containing combustible compounds and a second kind of pulverized materials being simultaneously calcined.