Stories by kenning

Fixing the core memory in a vintage IBM 1401 mainframe

Transistor Wall Clock

Vanish

Show HN: Find contract work via contract to perm arrangements

Inside Apple's new folding USB Charger (UK plug) / teardown

Inside a TTL Logic IC

More Counterfeit Apple Chargers Than You Can Shake An iPod At

Ask HN: What companies have private offices for programmers?

Steve Jobs to be immortalized on postage stamp

ASCII Bernanke, Wikileaks, photos, and Python: hidden in the Bitcoin blockchain

The Bitcoin malleability attack graphed hour by hour

Bitcoins the hard way: Using the raw Bitcoin protocol

How Academia Resembles a Drug Gang

Transistor Wall Clock

The Z-80's 16-bit increment/decrement circuit reverse engineered

The Z-80 has a 4-bit ALU. Here's how it works.

Reverse-engineering the Z-80: the silicon for two interesting gates explained

Reversing Sinclair's amazing 1974 calculator hack - half the ROM of the HP-35

Simulating a TI calculator with crazy 11-bit opcodes

More reverse-engineering of the 8085's ALU and its hidden registers

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