Sales of electrical products at DSG International stores in the UK and Ireland fell 12% in the 12 weeks ending 10 January, on a like-for-like basis.
DSG owns high street chains including Currys.digital and PC World.
Overall, the group’s like-for-like sales dropped 10% over the period.
However, sales rose 2% in the two weeks to 10 January as consumers snapped up more computing and electrical products.
Today, the group announced further cost reductions of £20m ?in response to the trading environment?.
This brings its total savings for the year to £95m.
Currys.digital stores used to be known as ?Dixons? until a nationwide re-branding operation in 2006.
Dixons first began as a photographic studio in 1937.
Like-for-like sales exclude the effect of new stores opening during the year.
Yesterday Tesco revealed that it sold 19% more cameras in November and December 2008 than it did in the same period the previous year.
Last week Jessops reported brisk trading over Christmas with sales up 3.1%.