Quantic PMI Model No. PEC-42-1G40G-20-12-292FF-ROHS is a 1 to 40 GHz Ultra-Wideband Low Noise Amplifier that provides 42 dB of gain typically with ±2.5 dB flatness and typical …

PMI MODEL: PEC-42-500M40G-20-12-292FF-BG IS A 500 MHz TO 40 GHz LOW NOISE AMPLIFIER THAT HAS A TYPICAL GAIN OF 42 dB WHILE MAINTAINING A ±2.5 dB …

pec 校验使用8 位循环冗余校验（crc-8），crc 校验包括一次通讯过程中的所有字节，如地址（其 中包括读写标志位）、命令字节以及数据字节。 下面以一个标准的读页面（页面0 对应1 通道 …

The Bourns Pro Audio PEC Series Rotary Encoders are incremental encoders with a 2-bit gray code output, 3Ω max closed circuit resistance, and a contact rating of 1mA @ 5V DC. Also …

HP-42S 的一些扩展，如更大的显示屏、更大的 alpha 寄存器、更大的数字范围和精度，以及它对复数的支持可能会导致一些 HP-41C 程序出现问题，后者可以通过禁用复数来解决）

It's a 14-page commemorative article which includes an all-new 423-line program written specifically for the occasion, in order to demonstrate interesting 42S programming techniques …

2024年12月6日 · The DM42/DM42n is the only new physical calculator that I know of that can simulate the HP-42S. Its software is based on Free42, a simulation of the HP-42S written by …

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2024年11月29日 · Overall, a 2 arcsecs PE is an excellent result. You may be able to try to eliminate the 42sec error by using PHD2 PPEC, but I wouldn't worry too much about it, either, …