If you want to learn electronics without burning a capacitor or two, have a look at https://www.circuitlab.com/ . It allows one to draw circuit diagram and simulate it. Hope you'll find it useful.
Plan 9 is an Operating System (OS) from Bell Labs which is a successor to UNIX. It builds on the learnings from the previous Operating systems. Network computing and graphics is an integral part of the OS rather than an afterthought. It is modular and portable - it comes with a cross compiler . It is available, under MIT License , which anybody can use, learn and tweak. Features Everything is a file. Small Kernel: Around 5MB size which can be built in under 2 minutes. Singular Grid: All the computers running Plan 9 OS and connected together act like a singular grid. So there's no need for remote access solutions like VNC or RDP. This cool video shows a small glimpse of the possibilities. Process Isolation: Processes run within their own namespaces and are isolated from each other. So you can run rio (the window manager) within rio. Applications like Browsers don't need complicated sandboxing. And a crashing program is unlikely to bring down the OS. No DLL Hell : ...
Quick visualization tool for Binary data using C header definition. Semantic parses the C header file and generates a type definition. The type definition is passed to bindat-unpack along with the binary data. The result is displayed using speedbar . ;; Note: The command works on the binary data in the current buffer. M-x hexl-form (hexl-form) The image shows the example included in the commentary section of bindat.el . Conversions (format "%02X" 255) ;; => "FF" (string-to-number "FF" 16) ;; => 255 ;; Little endian unpacking (let* ((bindat-raw [1 2 3 4 5 6 7 8]) (bindat-idx 0)) (bindat--unpack-u64r)) ;; Little endian packing (let* ((bindat-raw [0 0 0 0 0 0 0 0]) (bindat-idx 0)) (bindat--pack-u64r #x0102030405060708) bindat-raw) Insert Binary Data Emacs creates a multibyte buffer ...
Plan 9 Operating System uses 9p protocol for file access. This is an Elisp implementation of the protocol. Plan 9 ( 9front distribution) is running in QEMU with NAT networking. Local port 12564 is forwarded to 9fs service port 564 in the virtual machine. Code https://gitlab.com/atamariya/emacs/-/blob/dev/lisp/net/plan9.el Troubleshooting Plan 9 connection Ensure you are booting with -a tcp!*!564 parameters. (Tip: You can add these to your /n/9fat/plan9.ini) Ensure you have configured the network interface ip/ipconfig Ensure you have an IP address cat /net/ndb Ensure you are running cpu+auth server cpurc (Optional) Start graphics mode screenrc (Optional) Start window manager rio (Optional) List open connections netstat (Optional) Monitor network traffic snoopy (Optional) Debug authentication auth/debug (Optional)...
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