A Firmware Easter Egg from Hewlett-Packard’s Golden Era @KerryWongBlog

A Firmware Easter Egg from Hewlett-Packard’s Golden Era @KerryWongBlog

Uploaded February 2026 | Updated September 2026, 2 weeks ago

Did you know there is an Easter egg hidden in the firmware of the HP 8642B RF signal generator?

A Firmware Easter Egg from Hewlett-Packard’s Golden Era

TOOLTOP TH201 Oscilloscope/Multimeter/Thermal Camera/Signal Generator Review/Teardown

Another Look at the NanoVNA SAA-2N

Zotek ZT-703S Handheld Oscilloscope/DMM Review/Teardown - Compared to the ZT-702S

FNIRSI 2C53T 3-in-1 Handheld Oscilloscope/DMM/Signal Generator Review/Teardown - Compared to 2C23T

Thermal Master P2 Pro Thermal Camera, How Does it Compare to the Original P2?

XTAR 1.5V AA Rechargeable Lithium Ion Battery with Builtin USB-C Charging Port

Review of a Hantek TO1204D 4 Channel 200 MHz Digital Oscilloscope/DMM/AWG

Review of a UNI-T UTi690B/UTi260B Thermal Imager

OWON CP024 Oscilloscope AC/DC Current Probe Review/Teardown

I Found Some Good SMD Test Clips

HackRF One PortaPack No Sound? Can it be Repaired?

A Firmware Easter Egg from Hewlett-Packard’s Golden Era