Up for sale is a factory tube lot of **10 brand new, New Old Stock (NOS) Zilog Z8420A PS integrated circuits**. These are iconic, vintage 40-pin DIP parallel input/output (PIO) peripheral chips designed to interface directly with Z80 and Z80A microprocessor architectures. Bearing the historical **8347 date code**, these chips were manufactured in the 47th week of 1983, making them prime, authentic replacements for period-correct electronics layouts.**Ideal Applications:**
- Vintage home computer restorations (TRS-80, Sinclair, ZX Spectrum ecosystem components)
- Classic 1980s arcade cabinet PCB maintenance and logic board repairs
- Retro-computing homebrew projects (such as custom Z80 8-bit computers)**Chip Markings Displayed:**
- ZILOG
- Z08420A PS
- Z80A PIO
- 8347**Condition:**
- **New Old Stock (NOS)** / Surplus
- The chips remain completely unused with pristine, straight pins, safely stored inside a rigid plastic component tube as shown in the listing photograph.**Shipping & Safe Handling:**
Delicate vintage silicon demands anti-static and structural protection. The integrated circuit tube will be firmly wrapped in protective padding and packed inside a secure, rigid cardboard box to prevent any crushing or pin misalignment during transport.**Carrier:** Ships quickly and securely via **UPS** with package tracking provided automatically.