intel (R) Celeron (R) 420@1.6GHz the dual-core is it?

My home computer's CPU is the intel (R) Celeron (R) 420@1.6GHz I ask of you is the dual-core?

Celeron 420 single-core single-core of his ability to use my time when I feel the old P4 2.0 is about the addition of post-core Core reduces power consumption remember correctly should-45W when it should be a good potential for overclocking