The stock market crash of 1929 and the one in 2008 had many differences.
In 1929, there was a long period of time, in the 20's, in which it was doing extremely well and everyone was buying stock. Because stock represented capital (raw materials), and shares that almost all corporations in the United States owned, the fall of stock was a huge deal. In particular, the Banks had put alot of money into the stock with the help from deposits made by customers. When the stock market crashed in 1929, demands for goods fell because people were now poor and didn't have enough money to buy nice things, just the staples. This in turn made companies fall and banks.
In 2008, the main cause of the stock market crash was due to mortgage. Basically, people stopped fearing their loan companies and didn't pay back their loans, putting some banks into bankruptcy. Many different banks filed for bankruptcy that year, and were bought out by other banks. Such as, the Bank of America buying out Merrill Lynch for 50$ billion dollars.
As for technologies during 1929, the radio prices soared up to $125-150, and the first built-in radio for the car was made by Motorola. However, such technologies, in general (such as tv and film) were all given a second priority because of the costs of buying and viewing such things. People were more generally focused on buying food to support their families.
During today, however, we see a great increase in new technologies. The new smart phones are outselling regular video games , because of price and portability. Phones are usually something we take around everywhere with us - and the price for a game can be as cheap as 0.99$ or even free. As for video games, they usually only serve one purpose and can be hassle to take around - and very forgettable. Not only that, but the price for the console itself is pricey - the price of a smart phone that can do so many more things! Also, I think radio has slowly, over the years, died out because today, most people only listen to it in their car - traditional radio that is. We now have new and improved radios online or on itunes that are customizable and play only songs that we like. So there have been alot of changes due to price and preferences these days in technology.