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[en] A low-cost charge amplifier for a liquid argon photon detector and a new method for pulse height analysis are described. This scheme is suitable for high-energy photon detection with high counting rate. Samples of preamplifer output are taken just before and just after the arrival of the charge from the detector. The difference of these samples provides a stable pedestal and rejects low frequency noise. Short two-pulse resolving time (approximately equal to 200ns) is achieved. 6 refs

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[en] This book introduces microcomputer as a tool, which includes method of use of microcomputer, structure of microcomputer like CPU, memory and I/O port, mathematic ABC of microcomputer such as or, and not and ex-or, digital circuit ABC like Trigger FF, Delay FF, Transistor Transistor logic and Tristate, program of microcomputer, introduction of machine code, making of program, peripheral devices of microcomputer for control like LSI for I/O port and LSI for counter timer.

[en] We propose an approach to detect the temporary faults induced by an environmental phenomenon called single event upset (SEU). Berger code based self-checking checkers provides an online detection of faults in digital circuits as well as in memory arrays. In this work, a concurrent Berger code based online self- testable architecture is proposed and integrated in 32-bit DLX reduced instruction set computer (RISC) processor on a single silicon chip. The proposed concurrent test methodology is implemented and verified for various arithmetic and logical operations of the DLX processor. The FPGA implementation of the proposed design shows that a meager increase in hardware utilization facilitates online self-testing to detect temporary faults. (paper)

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[en] The energy window plays a very important role in the whole quality of γ Camera. The author introduces a digital energy window designing method for γ Camera. It can not only be used to γ Camera, but also to other nuclear medical devices and those fields where pulse is detected or used