It seems that technology is developed because a species uses tools and can develop more complex tools. I've never heard of e.g. a snake using something as a tool (e.g. a stick).
In principle I suppose an intelligent species of snake- or worm-like creatures could have enough flexibility to grip objects and manipulate them, which is just about enough for basic tool use. From there, again, in principle, they could build better tools with the tools they have. As the late Douglas Adams would have said, humans are basically apes who figured out how to hit rocks together.
Two issues arise. 150 cm is small for a body that needs a brain large and complex enough to develop intelligence. I'd suggest larger is better. Also the question of communications as it does seem that developing the ability to communicate in a language (can be signed, movement based, color, anything) is required to develop sentience. Your species requires a need for social grouping to have a purpose for communication and develop a concept of shared effort and resources.
So the question I REALLY ASK is if this race COULD build the same machines we currently have (in similar time) and especially I am thinking about COMPUTERS.
Given the above they could develop computers (which is essentially down to having the idea and being able to build tools to do it), but they'd have a harder time as manipulating tools without something equivalent to hands (multiple appendages) is going to be more difficult. I'd suggest they "evolve" some kind of additional appendages (e.g. small tentacles).
Using any complex device without additional appendages would be very limiting. What would be the equivalent of a typewriter keyboard or a mouse for a race with only their body to manipulate things ?
Additional appendages are going to be needed.