The Andromeda Anthology by Fred Hoyle

In addition to being the man who coined the term 'the Big Bang', world-renowned astronomer Sir Fred Hoyle also produced a fine body of science fiction. The Andromeda Anthology contains the acclaimed duology A for Andromeda and The Andromeda Breakthrough, co-written with John Elliot.
The close-knit group of scientists who work at the new radio telescope are shocked to receive a mysterious signal from the heart of the Andromeda galaxy. Working with mathematician Christine Jones, Dr John Fleming interprets the signal as the instructions to build a super-computer. When the computer begins to relay the information it receives from Andromeda, scientists find themselves possessing knowledge previously unknown to mankind, knowledge that could threaten the security of human life itself.

https://rapidgator.net/file/1a405e23daa75493d8d43cc33106e47d/

http://nitroflare.com/view/45F49CCECAEAEF8/