R. A. Penfold

Subjects

Amateurs' manuals, Microcomputers, Debugging in computer science, Digital techniques, Internet, Maintenance and repair, Microsoft Windows (Computer file), Photography, Adobe Photoshop, Adobe Photoshop elements, Broadband communication systems, Circuits électroniques, Cloud computing, Computer engineering, Computers, Computers and older people, Data processing, Design and construction, EBay (Firm), Electronic apparatus and appliances, Electronic circuits, Equipment and supplies, Handbooks, manuals, IPod (Digital music player), Internet auctions