I loved your April issue - all very nostalgic! When my young lad (now some 32 years old and with one and a half PhD's), first came home from his primary school talking about computers, I resolved to keep ahead of him.

Inevitably, a Sinclair ZX81 came along, soon followed by a ZX Spectrum and then a BBC Micro with all the bits.

Throughout this learning curve, I discovered Psion and have had virtually every model since the very first "push/pull" grey device. I used these various Psion offerings throughout my healthcare career as I had a need for truly portable, instant access information.

Now, as a professional photographer, I have learned to absorb the digital age and Photoshop, and still believe I am keeping ahead of my son - especially when it comes to imaging and spreadsheets. I thoroughly enjoyed your 30th anniversary issue and will keep it safe as a reminder of how far we have come.

Incidentally, I recently enjoyed an exhibition of the "Historic Development of computers" at the top of La Grande Arche in La Defence in Paris where they had actual examples of computers from the earliest to date.

Today, although I use a variety of PCs in my daily business, I still rely totally on a Psion 3MX for all my personal matters and immediately-to-hand information. It has been 100 per cent reliable, despite three serious drops.

Switching between three agendas, 14 spreadsheets, five databases, three word documents, it has never been beaten in terms of speed of access.

Other software (Berlitz, Phrase, Wine, Dietary Analysis etc) simply add to the versatility of this serious previous world-beater - and it was British-designed and made! An absolutely brilliant device - where next? Perhaps the nearest device is the latest Nokia Communicator?

Keith Erskine