[HECnet] No connectivity to arsgea 4

[Dave McGuire]

On 1/23/21 12:48 PM, Johnny Billquist wrote:
> Speaking of things like 74-series stuff. Based on various restoration 
> projects I'm aware of, there seems to be a huge difference in quality of 
> those ICs. Depending on manufacturing batch, and manufacturer...
> 
> Some never fail, while with some others, you can almost predict that 
> they will be non-functional now.
> 
> So I guess it also do depend a bit on who you picked as supplier back in 
> the day.

   Yes, very much so.  We've noticed that National Semiconductor is the 
worst offender for actual IC failures, and Texas Instruments is the 
worst for corrosion on IC leads.

              -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA