Pinouts
Pinouts
[Caption at top] Pinouts Quick Reference Guide
[Four common connectors are depicted - vertically, rather than the usual horizontal orientation.]
[The first connector is a 19-pin HDMI connector.] [The nine pins on the left are labeled:] Data +5V +6VI +7VII Antidata Water Vacuum Amazon Copyright Pin Decorative [The ten pins on the right are labeled:] +3.3V DC -3.3V DC Tx Wx Rx Only Unknown +240V DC 5V AC GND Ground
[The second connector is a 5-pin Micro USB connector.] [The five pins are labeled:] GND GND GND USB GND
[The third connector is a 24-pin USB-C connector, with only the right side labeled.] [The twelve pins on the right are labeled:] +5V DC +3.3V DC +120V AC Boobytrap Pin (Pure Solder) Mechanical +3.3eV/C Candlepin Facebook Use +5V (Positrons) Pin Roulette GND SKY
[The fourth and final connector is a 1-pin COAX connector.] [The one pin in the center is labeled:] Pin

Electronics connectors are designed to transport both information and power. A pinout diagram describes the function of each pin such as to communicate data, transport power, physical function (keying), etc. In this comic there is an absurd alternative to the actual pins used in connectors. The pin labels are references to many tech issues and attributes, and not all may be documented correctly here.
Hardware hobbyists might feel excitement at seeing a unified specification for these common connectors, but the comic is of course humorous. The real life diagrams are as follows: HDMI , Micro USB , USB-C .
The HDMI interface uses four pairs of shielded twisted-pair connectors, along with seven other connectors. ( Twisted pair means a wire is wrapped with the other wire that returns the current to the original device, thus minimizing electromagnetic noise. Shielding refers to wrapping a cable with a conductor to absorb the energy of noise.) Three of these pairs are for data (TMDS Data0, Data1, and Data2) and the other is a clock. These pairs take up three pins as one of them is a ground pin for the shielding wrapped around each pair. TMDS stands for " Transition-minimized differential signaling " and is also used in the DVI standard.
DDC stands for "Display Data Channel" and is based on the I²C serial standard. It is used to allow the transmitting device to learn what formats of data the receiving device can accept.
CEC stands for "Consumer Electronics Control" and is supposed to allow a single remote control to control multiple devices.
"Hot Plug Detect" refers to hot-plugging, where a cable is connected to a device already turned on. The device should then ideally detect that the cable has been plugged in and respond appropriately.
A ground pin is commonly found on USB and other pin connectors. At least one ground is necessary to complete the circuit, and some cables use multiple ground lines to distribute current or to support twisted pairs . However, there is no purpose served by having many more ground pins than data pins. Therefore, it seems rather silly for the micro USB to have 4 ground pins and only 1 functional "USB" pin. It also does not give much information about what the "USB" pin would do, as opposed to a standard pinout diagram. This diagram also leaves out the +5V power pin that is present in the real micro USB connector, which would render most USB peripherals unable to function.
The ordering and count of the pins may be an allusion to Monty Python 's "Spam" sketch, in which one of the many Spam-related menu items is "Spam, Spam, Spam, egg, and Spam".

The two sides of a USB C connector are labeled "A" and "B". These are rotationally symmetric, mostly. For example, B10 and B11 are Rx1, a separate twisted-pair for receiving information in Superspeed mode compared to A10 and A11's Rx2. This gives two Rx/Tx pairs for Superspeed use. CC1 and SBU1 are mirrored to CC2 and SBU2. However, the D, VBUS, and GND pins are perfectly mirrored.
The fact that only half of the USB-C pins are documented might hint to an alternative way to manufacture connectors that can be inserted rotated by 180°: Make the receiver use only the right side of the pins and make the sender connect both the left and the right side so all Pins that might match a function are connected correctly no matter if the cable is rotated by 180°. However, doing this would result in only having one Rx/Tx pair for Superspeed use.
A coaxial RF connector has two contacts - one pin, and the shield; typically the whole connector is labeled with whatever function/signal is carried by the pair.  The joke here is that the label is technically correct (the best kind of correct), but not very useful to the end user, as it does not specify the voltage rating, impedance, connector size, or other useful information about the cable.  Some serial data transmission systems, such as Ethernet , used coaxial cable early on as a low cost, widely available solution, however most of these have largely become obsolete.  A common coaxial cable still widely in use is RG-6 , which is typically used to deliver satellite television, cable television, and cable Internet services in the United States and Canada.
[Caption at top] Pinouts Quick Reference Guide
[Four common connectors are depicted - vertically, rather than the usual horizontal orientation.]
[The first connector is a 19-pin HDMI connector.] [The nine pins on the left are labeled:] Data +5V +6VI +7VII Antidata Water Vacuum Amazon Copyright Pin Decorative [The ten pins on the right are labeled:] +3.3V DC -3.3V DC Tx Wx Rx Only Unknown +240V DC 5V AC GND Ground
[The second connector is a 5-pin Micro USB connector.] [The five pins are labeled:] GND GND GND USB GND
[The third connector is a 24-pin USB-C connector, with only the right side labeled.] [The twelve pins on the right are labeled:] +5V DC +3.3V DC +120V AC Boobytrap Pin (Pure Solder) Mechanical +3.3eV/C Candlepin Facebook Use +5V (Positrons) Pin Roulette GND SKY
[The fourth and final connector is a 1-pin COAX connector.] [The one pin in the center is labeled:] Pin
