Abstract: Data supplied to a particular data input/output terminal is selected and the selected data is subjected to logic change for each memory cell based on mode setting data from a changing mode setting circuit and is simultaneously written into memory cells simultaneously selected in a memory array. After a reading logic changing circuit changes the data of these simultaneously selected memory cells in the same manner as the writing logic changing circuit does, a coincidence/non-coincidence among the logics of these data is determined, and a signal representing a logic in coincidence is output if a coincidence is found. Thus, testing can be achieved at a high speed and accurately, using test data having various patterns, without increasing the number of data input/output terminals used in the testing operation.

Abstract: A method for producing aryl alkyl hydroperoxides which comprises selectively oxidizing an aryl alkyl hydrocarbon having the formula: ##STR1## wherein P and Q are hydrogen or an alkyl and may be the same or different from each other; x is an integer of 1-3; and Ar is an aromatic hydrocarbon group having a valence of x, with an oxygen-containing gas in the presence of a transition metal complex which contains, as a ligand, a cyclic polyfunctional amine compound having at least three nitrogen atoms in the ring forming molecular chain or an open chain polyfunctional amine compound having at least three nitrogen atoms in the main chain of the molecule.

Abstract: In a semiconductor memory device, in a normal operation, data is written to selected four memory cells in accordance with external write data DQ0 to DQ3 applied to four data input/output terminals. In test mode, same data is commonly written to the selected four memory cells in accordance with write data DQ applied to one data input/output terminal. In the test mode operation, signal transmission between the remaining three data input/output terminals and the corresponding input buffer circuits is cut off by a CMOS logic gate provided therebetween and controlled in accordance with a test mode designating signal /TE.

Abstract: Two frame buffer memories are used. Depth coordinates are stored in a data bank memory of the first frame buffer memory. A comparing unit makes comparison between the depth coordinate of an image data currently displayed and the newly input depth coordinate, and thereby outputs a comparison result signal from a comparison result signal output terminal. In the second frame buffer memory, color data is stored in a data bank memory, and the comparison result signal sent from the first frame buffer memory is input via a comparison result signal input terminal. An image processing unit performs blending processing on the color data in response to the comparison result signal, and rewrites the color data.

Abstract: A manufacturing method for polycarbonate comprising ?I! a process for manufacturing diaryl carbonate from an aromatic hydroxy compound and an aromatic hydroxy compound, ?II! a process for manufacturing polycarbonate by solution polymerization of the diaryl carbonate obtained in ?II! and an aromatic dihydroxy compound in the presence of a catalyst comprising a nitrogen-containing basic compound, and ?III! a process for separating and removing the nitrogen-containing compound from the aromatic hydroxy by-products in ?II! and returning the resultant aromatic hydroxy compounds to process ?I! effectively reuses aromatic hydroxy by-products (e.g., phenols) of polycarbonate manufacturing to manufacture diaryl carbonate, while suppressing the production of alkyl aromatic ethers and then uses this diaryl carbonate to manufacture polycarbonate with good productivity.

Abstract: A process for preparing dimethyl naphthalenes, which comprises heating a compound, such as methyl-4-(p-tolyl) butane, methyl-4-(p-tolyl)butene or methyl-4-(p-tolyl)butadiene, in the presence of a cyclization-dehydrogenation catalyst.