摘要:
An electronic alarm timepiece comprises a quartz crystal oscillator, a frequency divider, a display driving means, a display means, an alarm signal shaping means and an alarm means. The alarm signal shaping means is so arranged that a pair of output signals which are opposite in phase are produced with the aid of output signals of the frequency divider for actuating the alarm means, whereby it is possible to provide an alarm signal shaping means in the form of a complementary metal oxide semiconductor (CMOS) integrated circuit having sufficient power to actuate the alarm means without other amplifying circuits.
摘要:
An analogue electronic timepiece is described having an oscillator, a frequency divider, a hand display means, an hour and minute circuit for counting the output of the frequency divider, and an alarm setting circuit. An equality checking circuit adapted to compare the output of the hour and minute circuit with the output of the alarm setting circuit to produce a coincidence signal. An alarm device is operated by the coincidence signal, gate means, and a manual switch. The gate means is so arranged to produce a signal for setting an alarm time in the alarm setting circuit in accordance with the closing of the switch.
摘要:
In an electronic timepiece having an analog type of time display by means of hours and minutes hands, an alarm system is provided which functions electronically and independently of the analog display system. An alarm signal is generated when the time duration counted by an alarm timekeeping circuit coincides with an alarm time stored in an alarm time memory circuit, said alarm time being set by the timepiece user actuating a switch.
摘要:
The purpose of the present invention is to provide a compound that specifically binds to the base sequence of a double-stranded nucleic acid molecule. The compound can reduce the electrochemical signal/noise ratio (S/N) in electrochemical detection, and as a result, the detection sensitivity (precision) will be greatly improved so as to enable the determination of an ultratrace amount of nucleic acid molecule. The present invention relates to a ferrocene compound represented by the following general formula (I): wherein “A” represents a divalent ferrocene-containing linker or ferrocene-1,1′-yl, R2 represents a hydrogen atom or alkyl; “n” and “m” represent any natural numbers; and “V” and “X” represent the pyrrole-imidazole-polyamide (PIPA); to a ligand consisting of said ferrocene compound for sequence-specific detection of double-stranded nucleic acid molecules; to a method for electrochemical detection of double-stranded nucleic acid molecules 8 with the use of said ligand; and to an apparatus or device for the electrochemical detection with the use of said ligand.
摘要:
The purpose of the invention is to develop a silyl linker that can be efficiently introduced on a solid-phase support used for the synthesis of nucleic acid oligomers such as DNA. The present invention relates to a silyl linker for use in the solid-phase synthesis of nucleic acid, comprised of a compound of the general formula or its ester or salt: H—(R1)Si(R2)-(C6H4)—CONH-(A)-COOH (I) wherein each of R1 and R2 is an alkyl or aryl group, and (A) represents a spacer moiety; a 3′-end nucleoside unit having said compound linked via an oxygen atom to the 3-position of a sugar of the nucleoside or its derivative, a solid-phase support having the 3′-end nucleoside unit, and a method for synthesis of nucleic acid oligomer with the use of said solid-phase support.
摘要:
A frequency adjusting circuit for digitally adjusting the frequency of a time reference signal consisting of a series of pulses is disclosed. The circuit function to adjust the frequency of said series of pulses by subtracting or adding a given number of pulses from or to said series of pulses for a time set beforehand every time upon receipt of a predetermined number of pulses of said time reference signal.
摘要:
A voltage sensing circuit is disclosed, which utilizes a reference voltage generating circuit for producing a reference voltage whose value is determined as a function of absolute temperature, independent of circuit element variations, the reference voltage being generated by means of a pair of MOS field effect transistors having different values of Id/K, where Id is drain current and K is the channel pattern ratio W/L.
摘要:
A temperature sensing device is disclosed which utilizes a temperature sensing circuit which generates a voltage whose level varies linearly in accordance with temperature, this voltage being produced using a pair of MOS field effect transistors which have different values of the ratio Id/K, where Id is drain current and K is the channel pattern ratio of channel width to channel length.
摘要:
An electronic digital stop watch including means for generating a time standard signal, a display device for indicating the time lapsed from the start operation and alarm control means provided for presetting a desired alarm time and for generating an audible alarm signal when the lapsed time becomes equal to the preset time.