Abstract: A semiconductor memory device with a flash write function includes word lines and bit lines; memory cells connected between the word lines and the bit lines; and a flash write mode designating unit for designating a flash write mode in accordance with external control signals. The semiconductor memory device further includes an internal address generating unit which is driven during a flash write mode for sequentially generating internal address signals. The semiconductor memory device additionally has a word-line selecting unit for sequentially selecting the word lines in accordance with the internal address signals from the internal address generating unit. A preset data generating unit is further included in the semiconductor memory device for generating preset data.

Abstract: A process for preparing a powdered ceramic raw material comprises the steps of(a) adding ammonia gas or an alkali to a first aqueous solution containing a water-soluble salt of lead capable of being precipitated as a hydroxide until the pH of the first solution reaches a value within the range of 9 to 10 to form a precipitate of lead hydroxide;(b) adding ammonia gas or alkali to a second aqueous solution containing at least one water-soluble salt or ceramic components other than lead capable of being precipitated as a hydroxide until the pH of the second solution reaches a value within the range of 9 to 10 to form a precipitate of hydroxide of said ceramic components;(c) mixing the resulting reaction mixtures, followed by separation of the precipitates of hydroxides from solution, washing with water and drying; and(d) calcining the precipitate to form complex oxides of said ceramic material.

Abstract: A process for preparing a powdered ceramic raw material, comprising the steps of; (a) adding gaseous carbon dioxide or a precipitant composed of a water-soluble carbonate to the first aqueous solution containing at least one nitrate or chloride of elements selected from the group consisting of Ba, Sr, Ca and Mg until the pH of the solution is reached to a predetermined value within the range of 7 to 10 to precipitate at least one carbonate of said elements, (b) adding ammonia gas or a precipitant composed of an aqueous solution of a water-soluble hydroxide to the second aqueous solution of at least one nitrate or choride of elements selected from the group consisting of Ti, Zr and Sn until the pH of the solution is reached to a predetermined value within the range of 7 to 10 to precipitate at least one hydroxide of said elements, (c) adding ammonia gas or a precipitant composed of an aqueous solution of a water-soluble hydroxide to the third aqueous solution of lead acetate or lead nitrate until the pH of the

Abstract: An apparatus for manufacturing a laminated unit of ceramic green sheets comprises an endless belt, and an applying apparatus provided at a predetermined position on the running path of the endless belt. The applying apparatus includes a reservoir for storing a ceramic slurry and a moveable blade. When the belt runs with the blade spaced a predetermined distance from the top surface of the endless belt, the ceramic slurry flows out through a gap between the blade and the belt and, thus, is applied on the belt to a predetermined thickness. The applied ceramic slurry is dried by a drier so as to form a ceramic green sheet. A conductive paste is printed on the top surface of the ceramic green sheet by a printing apparatus. The printed conductive paste is dried by a drier.

Abstract: A high permittivity ceramic composition comprises, by weight, 84.25 to 92.4% of substantially stoichiometric barium titanate; substantially stoichiometric calcium zirconate and substantially stoichiometric calcium stannate, the sum of said calcium zirconate and calcium stannate being 9.5 to 13.5%, the weight ratio of said calcium zirconate to calcium stannate being 1:2.5 to 3:1; 0.05 to 0.25% of substantially stoichiometric magnesium titanate; and 0.05 to 2.0% of at least one oxide of rare earth elements.

Abstract: A process for preparing a particulate ceramic material comprising the steps of:(a) adding carbon dioxide or an aqueous solution of a soluble carbonate to first aqueous solution of a nitrate or chloride of Ba, Sr, Ca or Mg in a first vessel to adjust the pH of said first aqueous solution to between 7 and 10 thereby forming a carbonate precipitate;(b) adding an aqueous solution of a soluble hydroxide to a second aqueous solution of a nitrate or chloride of Ti, Zr, Sn or Pb in a second vessel to adjust the pH of said second aqueous solution to between 7 and 10 thereby forming a hydroxide precipitate;(c) combining slurries containing the precipitates formed in said first and second vessels;(d) mixing the combined slurries;(e) passing the slurries through a filter;(f) washing the filter cake with water;(g) drying the filter cake to form a powder;(h) calcining the dried powder; and(i) grinding the calcined powder.

Abstract: A ceramic dielectric composition for temperature compensating capacitors comprising 64-70.5% by weight of SrTiO.sub.3, 28-34% by weight of CaTiO.sub.3 and 1.5-4.5% by weight of Bi.sub.2 O.sub.3 or Bi.sub.2 O.sub.3.nTiO.sub.2 (where n=1 to 5). Not more than 10% by weight of MgTiO.sub.3 may be added, as necessary. The composition has high dielectric constant above 235 and Q above 2000 and low temperature coefficient of a dielectric constant up to -1000.times.10.sup.-6 /.degree.C. The ceramic element obtained by the composition has a large adhesion strength to electroless plating electrodes (nickel or copper).

Abstract: A control circuit for a vehicle-mounted air conditioner having plural dampers therein comprises a manual command entry unit for entering command signals to a computer unit. The computer unit includes a first computer constantly powered by a vehicle-mounted storage battery to receive a temperature resetting command signal from the entry unit and a second computer which is powered from the battery through an engine ignition key switch to receive control data from the first computer to control the air conditioner. A plurality of operating parameter sensors also supplies sensed operating parameters to the second computer to permit it to control one or more of the dampers to direct conditioned air to the vehicle compartment. A display unit receives data from the computer unit to provide visual display of the reference temperature and the operating conditions of the air conditioner.

Abstract: A plurality of filtering plates stacked up one on top of another to form a filter in conjunction with clamping bolts passed through the filtering plates and scrapers interposed between said filtering plates, which stacked filtering plates are characterized in that they are given an increased wall thickness around the perforations bored therein for passage of the clamping bolts, engaging projections are formed on one surface of the portions of increased wall thickness and corresponding engaging recesses are formed on the other surface of the portions so that the engaging projections of the filtering plates will snugly fit into the engaging recesses of the adjacent filtering plates while, at the same time, the portions of the two adjacent filtering plates having normal thickness give rise to filtering spaces therebetween.

Abstract: Disclosed herein is an improvement in a filter of the type having a plurality of filtering plates vertically spaced at fixed intervals to interpose filtering spaces therebetween and as many scrapers laid outwardly from the axis of the stack of filtering plates and inserted one each into the filtering spaces, i.e. between the adjacent filtering plates, the improvement which includes giving each filtering plate a perfectly circular periphery so as to avoid formation of any protuberance from the circumferences and, at the same time, disposing the scrapers so as to keep sliding contact with the adjacent filtering plates.