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英文字典中文字典相關資料:
  • TTL在ping命令中代表什么? - 知乎
    TTL(Time To Live):数据包的存活周期,每经过一个三层设备减1,包括三层交换机,直到TTL为零时抛弃数据包,目的:防环路。默认值:Windows 128(Windows 10 后的版本)、UNIX 255、Linux 64 或 255。
  • 问一下大家什么是USB转TTL? - 知乎
    usb转ttl是一种 串口通信 转换器,它可以将usb接口转换为ttl串口通信接口。 ttl串口通信是一种常见的数字通信方式,常用于单片机、传感器等设备之间的数据传输。 通过usb转ttl转换器,可以将计算机的usb接口与ttl串口设备连接起来,实现数据的传输和通信。
  • uart、串口、COM口、USB口,ttl,rs232,rs485这几个到底是啥关系? - 知乎
    ttl:ttl指双极型三极管逻辑电路,也可以指一种电平规范(类似的还有cmos电平等)。淘宝上很多“usb转ttl”模块,实际上是“usb转ttl电平的串口模块”。这种信号0对应0v,1对应3 3v或者5v。与单片机、soc的io电平兼容。
  • Does TTL need to be set to 3600 for MX record? - Microsoft Community
    But the domain is still not getting verified I've hit the refresh button on the 'Domain Settings' page too but to no avail The only issue I'm having is that my domain host does not allow TTL values less than 14400 (4 hours) Thus I'm unable to set the TTL value specified in the instructions on the 'Domain Settings' page - 3600
  • digital logic - What is meant by TTL in this context? - Electrical . . .
    Additionally, a user might think that a high signal means "100%", and that a low signal means "0% " Depending on the specific TTL driver, this is not true because of the effective voltages The Chapter "CHANGE THE ANALOG INPUT MODULATION TRANSFER FUNCTION" on page 15 of the linked data sheet shows an example control circuit
  • what is it TTL which shows on ping report and the value its showing . . .
    If the TTL value started at, say, 128 and you see a value of 28, then there were 100 hops between the system where the packet originated and the final destination My guess is that the initial TTL for the ping packets was 255, so the first ping traversal took 200 hops and the second took 9
  • USART, UART, RS232, USB, SPI, I2C, TTL, etc. what are all of these and . . .
    Often any 5V logic is called TTL, although most circuits nowadays are built as CMOS Today there are also many circuits that work at 3 3V, which is no longer TTL With respect to the internal levels the levels on the RS-232 line are inverted, +12V corresponds to logical low and -12V corresponds to logical high, which can be confusing
  • 带你一分钟了解编码器基础知识 - 知乎
    此外,增量编码器的信号输出电平标准也是多样的,常见的有ttl、htl、pnp和npn等。ttl和htl是常见的电平标准,其中ttl为长线差分驱动,而htl也称为推拉式或推挽式输出,适用于工业控制系统。pnp和npn则是集电极开路输出的两种类型,用于不同的电路连接需求。
  • 什么叫TTL电平? - 知乎
    ttl电平信号被利用的最多是因为通常数据表示采用二进制规定,+5v等价于逻辑"1",0v等价于逻辑"0",这就被称做ttl(晶体管-晶体管逻辑电平)信号系统,这是计算机处理器控制的设备内部各部分之间通信的标准技术。
  • 知乎盐选 | 2. 3 TTL 门电路
    ttl 电路,即三极管-三极管逻辑电路,属双极型数字集成电路。 按照逻辑功能的不同,TTL 门电路种类很多,本节主要介绍几种常用的电路。 其中 TTL 与非门较为典型,它的电路组成、工作原理及电气特性等,在 TTL 集成电路中都具有代表性。





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