Your smartphone is a prime example of full duplex mode in action.Īnother consideration when discussing serial communication is the protocol and endianness of the two host computers. Source and destination are both active and can send and receive data simultaneously. Full Duplex mode is the world’s most widely used form of serial communication.It then becomes the sender when returning the information to your computer, which is now the receiver. When you make a request from your computer for a webpage, the server processes the request. A case in point can be seen when using the Internet. Transmission only occurs in one direction at a time. Half Duplex mode permits the source and destination to both be active, but not simultaneously.Simplex mode is used when broadcasting television or radio signals. If the source is sending data, the receiver has no choice but to accept the transmission. In this scheme, only the source or destination is active at any given time. The Simplex method implements one-way data transmission.Various types of serial communication can be employed and are designated as Simplex, Half Duplex, and Full Duplex They are also referred to as the sender and receiver. In order to implement serial communication, a source and destination are required. Conversely, binary zero is denoted with a logic LOW or zero volts. The binary digit one is represented by five volts or a HIGH logic. just adds to the complexity and efficiency, and reduces clarity.Binary pulses are used to transmit data in serial data transmission. "" -f $Manufacturer,$Name,$Serial | Out-File $LogFileĪdding a "Decode" function in place of a copy/paste of the string ::ASCII.GetString($_. $Serial = ::ASCII.GetString($_.SerialNumberID).Trim(0x00) $Name = ::ASCII.GetString($_.UserFriendlyName).Trim(0x00) $Manufacturer = ::ASCII.GetString($_.ManufacturerName).Trim(0x00) Get-WmiObject WmiMonitorID -Namespace root\wmi | The whole set of code in the original poster's question can be replaced by this: $LogFile = "c:\Junk\monitors.txt" It will remove items within the byte array representation of the string that match the value of zero, not just the trailing items that match. The "-notmatch" operator is acting on the individual elements of the byte array, not on the entire value. It's an object of type byte (an array of bytes). The "SerialNumberID" property is not a string. I think the problem is the lack of understanding about what the Get-CimInstance WmiMonitorID -Namespace root\wmi).SerialNumberID -notmatch 0 is actually doing.
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