John Daines November 2021
I’ve always assumed that P1, P2 and P3 are constituent programs of the L3 suite – Bakery Valuations.
From reading some of the files, these are very complicated programs and the machine was tiny.
The following shows the amount of time involved.
![](https://www.leo-computers.org.uk/leopedia.org/wp-content/uploads/2023/11/image-1.png)
From looking at Lenaerts Notebook No 8 page 39 written on Monday, Dec 3rd 1951, he refers to the P programme’s successful run on Friday afternoon (November 30th) at 2:20. Note that Len then continues with his usual pre-occupation (faults!).
![](https://www.leo-computers.org.uk/leopedia.org/wp-content/uploads/2023/11/image-2-637x1024.png)
Note also that on the 28th, page 37, he notes the successful completion of P1, suggesting that perhaps P2 ran on the 29th.
Three days therefore looks a reasonable view.
![](https://www.leo-computers.org.uk/leopedia.org/wp-content/uploads/2023/11/image-3.png)