Modular electronics

1. A computing device having a major face including at least a first edge, comprising:

an integrated unit comprising one or more functional components; and

an extremely high frequency (EHF) communication unit operatively coupled to the integrated unit, the EHF communication unit including:

a transducer configured to transmit, receive, or both transmit and receive an EHF electromagnetic signal and convert between an electrical signal and the EHF electromagnetic signal; and

a first communication device operatively coupled to the transducer and adjacent to the first edge, wherein the EHF communication unit enables at least one of the functional components of the integrated unit of the computing device to be supplemented by a functional component of a first external computing device,

wherein the first edge of the computing device mates with an edge of the first external computing device to permit an EHF communication link across the first edge between the first communication device of the computing device and a second communication device of the first external computing device adjacent to the edge of the first external computing device.

2. The computing device of claim 1 , wherein the first communication device comprises a transmitter, receiver, or transceiver.

3. The computing device of claim 1 , wherein the first communication device is a side-launch device configured to propagate the EHF electromagnetic signal in a direction away from the first edge and along a direction of a surface of the major face of the computing device.

4. The computing device of claim 1 , the major face of the computing device further including a second edge, and wherein:

the EHF communication unit further includes a third communication device operatively coupled to the transducer and adjacent to the second edge,

wherein the second edge of the computing device mates with an edge of a second external computing device to permit a second EHF communication link across the second edge between the third communication device of the computing device and a fourth communication device of the second external computing device adjacent to the edge of the second external computing device.

5. The computing device of claim 4 , wherein the major face is rectangular in shape, and the first and second edges correspond to adjacent edges of the major face.

6. The computing device of claim 1 , wherein the computing device and the first external computing device are part of a plurality of computing devices coupled together via EHF communication links to form a reconfigurable computing system, in which functional components of the reconfigurable computing system are distributed over the multiple computing devices.

7. The computing device of claim 6 , wherein the computing device implements a host operating system able to migrate one or more processes to from a functional component of the computing device to the first external computing device, utilize memory resources of the first external computing device, utilize functional components of the first computing device, or receive power from the first external computing device.

8. The computing device of claim 1 , further comprising an authentication unit configured to authenticate the first external computing device prior to sharing of the functional component of the first external computing device with the at least one functional component of the computing device.

9. The computing device of claim 1 , wherein the computing device is selectively mated to the first external computing device by a manually releasable coupling.

10. The computing device of claim 9 , wherein the manually releasable coupling comprises a first magnet disposed in the computing device and a second magnet disposed in the first external computing device such that a magnetic interaction between the first magnet and the second magnet couples the computing device and the first external computing device when they are mated.

11. The computing device of claim 1 , further comprising a mechanical registration feature.

12. The computing device of claim 1 , wherein the functional components of the integrated unit or functional component of the first external computing device include at least one of display circuitry, graphics circuitry, non-volatile memory, an audio component, and a camera.

13. The computing device of claim 1 , wherein:

the EHF communication unit further includes a second communication device operatively coupled to the transducer, the second communication device configured to propagate EHF electromagnetic signals in a direction away from the major face, and

wherein the major face of the computing device or a surface of the computing device opposite from the major face faces a major face of a second external computing device to permit a second EHF communication link between the second communication device and a communication device of the second external computing device having a direction that crosses the major face.

14. The computing device of claim 1 , wherein the EHF communication link uses a protocol selected from the list consisting of: MIPI, HyperTransport, QuickPath Interconnect (QPI) USB, PCIe, SATA, DisplayPort, and Thunderbolt.

15. The computing device of claim 1 , wherein the transducer of the EHF communication unit comprises an asynchronous signal path for converting between the electrical signal and the EHF electromagnetic signal.

16. The computing device of claim 15 , wherein the asynchronous signal path has a latency of less than 1 ns.

17. The computing device of claim 1 , wherein the EHF communication link between the first communication device and the second communication device is established by:

determining, at the first communication device, whether the second communication device is within a threshold proximity;

exchanging information between the first communication device and the second communication device, the exchanged information indicating at least a level of signal strength and at least one protocol associated with the first and second communication devices; and

determining, based upon the exchanged information, whether the EHF communication link can be established between the first and second communication devices.

18. The computing device of claim 17 , wherein the exchanged information further comprises authentication information, and wherein the computing device uses the authentication information to determine whether it has access to one or more resources of the first external computing device via the EHF communication link.

19. The computing device of claim 1 , further comprising a dielectric waveguide extending between the first communication component and the first edge for conducting the EHF electromagnetic signal.