Archive for August 2024

Ethernet network isolators

One day I came across a device called “Ethernet Network Isolator” and started to wonder why we would need such device as standard Ethernet system that uses twisted pair cable and RJ-45 connectors is already isolated  from both ends of the cable (isolation transformers that can withstand 1500V).  When the network connections made with unshielded

PC History: Floppy drive

The PC floppy disk drive is a type of disk drive that reads and writes data to and from a floppy disk, which was a common data storage medium from the 1970s to the early 2000s. Floppy disks were so common in late 20th-century culture that many electronic and software programs continue to use save

Friday Fun: Hacker test

The Hacker Test was an old test of how much of a ‘hacker’ (as in ‘nerd’, not ‘cracker’) you are. Since it came out in 1990, almost all of the questions are obsolete. That makes it a really neat historical document of what people considered cool at the time. Hacker Test History https://github.com/hwayne/hacker-test-history

Raspberry Pi RP2350

Raspbertty Pi has release a new board: Pico 2. The Pico 2 has Raspberry Pi’s latest silicon, the RP2350. It is available now for $5. Raspberry Pi Pico 2: a RISC-V bet! https://www.youtube.com/watch?v=oXF_lVwA8A4 The RP2350 is Raspberry Pi’s second-generation in-house microcontroller design. The Raspberry Pi RP2350 is a major upgrade over the earlier Raspberry Pi

DJ technology

DJing is the act of playing existing recorded music for a live audience. The modern DJ’s role as a performer who creates a seamless and extended mix of music for a dance party or club atmosphere evolved from radio personalities who introduced and played individual selections of recorded music on broadcast radio stations. A disc